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Yuerui (Larry) Lu01/12/2025, 09:30
Two-dimensional (2D) van der Waals quantum materials have become important building blocks for future electronic, photonic, phononic and quantum devices. The highly enhanced Coulomb interactions in the atomically thin quantum 2D materials, arising from the reduced dimensionality and weak dielectric screening, allows the formation of tightly bound excitons, biexcitons and interlayer biexcitons....
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Yule Mayevsky-Mattiaccio (RMIT University), Akram Youssry (RMIT University), Mr Ritik Sareen (RMIT University)01/12/2025, 10:45Quantum Science and TechnologyContributed Oral
Higher-dimensional quantum systems (qudits) offer advantages in information encoding, error resilience, and compact gate implementations, and naturally arise in platforms such as superconducting and solid-state systems. However, realistic conditions such as non-Markovian noise, non-ideal pulses, and beyond rotating wave approximation (RWA) dynamics pose significant challenges for controlling...
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Joan A Vaccaro (Griffith University)01/12/2025, 10:45
The violation of the discrete symmetries of charge conjugation (C), parity inversion (P), and time reversal (T) observed in high energy physics are fundamental aspects of nature. A new quantum theory [1,2] has been introduced to explore the possibility of their large-scale physical consequences. The new theory does not assume any conservation laws or equations of motion at the outset. In...
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James Zingel (School of Electrical Engineering and Telecommunications, UNSW Sydney, Sydney, Australia)01/12/2025, 11:00Quantum Science and TechnologyContributed Oral
High-dimensional qudit systems yield the exciting prospect of hosting error-correctable logical qubits [1]. The antimony (123Sb) donor in silicon is ideal for this purpose, because its spin-7/2 nucleus embeds an 8-dimensional Hilbert space (or 16-dimensional, including the electron [2]) that can encode Schrödinger cat states [3].
Scaling up this donor nuclear qubits requires using electrons...
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Oleg Sushkov (University of New South Wales)01/12/2025, 11:00Focus session invited talk
A possible exciton condensation in monolayer graphene had been widely discussed/predicted in theoretical literature and never observed before. Clearly something is wrong with the conventional theoretical approach. Recent STM data indicate opening of a gap in the metal decorated monolayer graphene near the Dirac point. The ratio of the gap over the critical temperature is about 100. I argue...
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Jannis Ruh01/12/2025, 11:15
We present a novel graph-theoretic approach to simplifying generic many-body Hamiltonians. Our primary result introduces a recursive twin-collapse algorithm, leveraging the identification and elimination of symmetric vertex pairs (twins) within the frustration graph of the Hamiltonian. This method systematically block-diagonalizes Hamiltonians, reducing complexity while preserving the...
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MAHYA MOHAMMADI01/12/2025, 11:15Quantum Science and TechnologyContributed Oral
Sensing and detection in the mid-infrared (MIR) range are crucial, as many molecules exhibit characteristic absorption bands [1]. However, traditional techniques like Fourier Transform Infrared (FTIR) spectroscopy rely on costly lasers, complex and noisy detectors often requiring cryogenic cooling, all of which limit their applicability [2]. To address these limitations, we propose a quantum...
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Stephan Rachel (University of Melbourne)01/12/2025, 11:30From Edge States to Emergent Phases: Advances in Topological and Strongly Correlated MaterialsFocus session invited talk
Motivated by the recently discovered superconductivity in boron-doped Sn/Si(111) with a Tc as high as 10K [1], I will focus on unconventional superconductivity of correlated electrons on the triangular lattice. I will further demonstrate the significance of Rashba spin-orbit couling for materials such as Sn/Si(111) and show that, as a consequence, the superconducting phase possesses a...
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Flynn Linton (Monash University)01/12/2025, 11:30
Gravitational waves from cosmological phase transitions offer a novel probe of particle physics. As the early universe cooled, it may have undergone a phase transition from a metastable vacuum to the true vacuum. While the Standard Model of particle physics predicts continuous phase transitions during electroweak and QCD symmetry breaking, many extensions of the Standard Model predict...
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alex terrasson (university of queensland)01/12/2025, 11:30Quantum Science and TechnologyContributed Oral
Microscopy is central to biological discovery, but high performance often requires high illumination powers that induce photodamage. Quantum correlations offer a way to overcome this limit by enhancing the signal-to-noise ratio at fixed optical intensities.
We present a quantum microscope based on stimulated Raman scattering (SRS), a widely used technique for molecular fingerprinting...
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Marko Beocanin (University of New South Wales)01/12/2025, 11:45
The Strong CP Problem can be solved elegantly and economically by introducing a spontaneously broken, anomalous, global Peccei-Quinn (PQ) symmetry, whose Goldstone boson - the axion - dynamically cancels out the CP-violating phase. However, the global-symmetry-breaking corrections expected to arise from quantum gravity can threaten this perfect cancellation, and need to be either enormously...
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Rakhitha Chandrasekara (CSIRO)01/12/2025, 11:45Quantum Science and TechnologyContributed Oral
Secure Position, Navigation and Timing (PNT) is of critical importance in modern day to day life and the contemporary state-of-the-art radio frequency-based systems are vulnerable to various intercept and signal jamming attacks. Thus, the need for development of more secure alternative PNT capabilities. Quantum entanglement provides an elegant way of sharing tightly correlated time...
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Cameron McGarry (University of Sydney)01/12/2025, 12:00Quantum Science and TechnologyContributed Oral
Trapped-ion platforms have emerged as a powerful architecture for quantum simulation, offering high-fidelity universal control over both internal atomic states (spins) and bosonic motional modes. This makes them particularly well-suited for simulating molecular dynamics, where a natural analogy allows a molecule’s electronic configuration to be mapped onto the ion's spin, and its vibrational...
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Dr Mengting Zhao (Monash University)01/12/2025, 12:00From Edge States to Emergent Phases: Advances in Topological and Strongly Correlated MaterialsFocus session invited talk
Flat bands with narrow energy dispersion can give rise to strongly correlated electronic and topological phases, especially when located at the Fermi level. Whilst flat bands have been experimentally realized in two-dimensional (2D) twisted van der Waals heterostructures, they are highly sensitive to twist angle, necessitating complex fabrication techniques. Geometrically frustrated kagome...
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Dominic Lewis (RMIT University)01/12/2025, 12:00
Shannon theory has been a very useful tool for studying quantum field theories with an ultraviolet cutoff as simultaneously continuous and discrete on a lattice. Recently this has been extended to fields without a cutoff using wavelets, presenting free (continuous) quantum fields in n dimensions as equivalent discrete lattice theories in n+1 dimensions with potentially holographic properties....
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Adem Ozer (Macquarie University)01/12/2025, 12:15Quantum Science and TechnologyContributed Oral
Over the past two decades, the field of cavity optomechanics has succeeded in cooling resonant mechanical oscillators down to their quantum ground state. The success of cavity optomechanics has led to various proposals which aim to harness the quantum properties of cooled mechanical systems, including in tests of fundamental physics [1], quantum state preparation [2] and quantum metrology [3]....
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Jesper Levinsen (Monash University)01/12/2025, 12:15
Quantum droplets are self-bound low-density configurations which may appear in ultracold gases with competing interactions. Dilute bosonic mixtures, where the attractive mean-field energy is balanced by the repulsive Lee-Huang-Yang correction stemming from quantum fluctuations, are the prototypical platform where this novel state has been first predicted [1] and shortly after experimentally...
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Prof. Oleg Tretiakov (UNSW)01/12/2025, 13:30From Edge States to Emergent Phases: Advances in Topological and Strongly Correlated MaterialsFocus session invited talk
I will discuss topological magnetic textures, such as skyrmions, merons, and (anti)bimerons, which constitute tiny chiral whirls in the magnetic order. They are promising candidates as information carriers for next generation electronics, as they can be efficiently propelled at very high velocities employing current-induced spin torques [1]. First, I will talk about bimerons [2] and...
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Enbang Li (School of Physics, EIS, University of Wollongong, NSW 2522, Australia)01/12/2025, 13:30
According to Einstein’s general theory of relativity, photons—though massless—are influenced by gravitational fields because gravity acts not as a force in the Newtonian sense but as a manifestation of spacetime curvature. In this framework, a photon follows a null geodesic, meaning its path bends when passing near massive objects due to the warping of spacetime. This leads to several key...
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Meera Parish01/12/2025, 13:30Ultracold Atoms and Quantum TechnologyFocus session invited talk
We investigate the fundamental problem of a small density of bosonic impurities immersed in a dilute Bose gas at zero temperature. Using a rigorous perturbative expansion, we show that the presence of the surrounding medium enhances the repulsion between dressed bosonic impurities (polarons) in the regime of weak interactions. Crucially, this differs from prevailing theories based on Landau...
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Aditya Singh Tejas (Australian National University)01/12/2025, 14:00
Nuclear fusion not only promises carbon-free energy but also drives deeper insights into fundamental quantum dynamics under extreme conditions. Non-relativistic quantum scattering theory informs our broad understanding of nuclear collision processes. However, detailed theoretical insights remain elusive with conventional approaches.
In this work, we investigate a new time-dependent...
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Harley Scammell (University of Technology Sydney)01/12/2025, 14:00From Edge States to Emergent Phases: Advances in Topological and Strongly Correlated MaterialsFocus session invited talk
Scanning tunneling microscopy (STM) is a powerful local probe of correlated electronic states. We introduce a group-theoretical framework for STM analysis that decomposes images into components corresponding to irreducible representations of the local density of states, providing a real-space map of symmetry properties. This decomposition enables the direct detection of spatial...
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Jia Wang (Swinburne University of Technology)01/12/2025, 14:00Ultracold Atoms and Quantum TechnologyInvited/Keynote talk
Polaron quasiparticles—impurities interacting with a quantum medium—represent one of the earliest and most fundamental topics in condensed matter physics. A key feature of polaron physics is the interplay between few-body and many-body effects. In strongly interacting regimes where mean-field and perturbative methods often fail, polaron systems offer a unique opportunity for exact treatment:...
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James Vandeleur (University of New South Wales (UNSW))01/12/2025, 14:15
We present a systematic investigation of the possible phenomenological impact of residual, abelian flavour groups in the charged lepton sector. The allowed flavour structures of operators in the Standard Model Effective Field Theory (up to dimension six) lead to distinctive and observable patterns of charged lepton flavour violating processes. We illustrate the relevance of such selection...
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Simon Vedl (Macquarie University)01/12/2025, 14:30
We introduce a method of reverse holography by which a bulk metric is shown to arise from locally computable multiscale correlations of a boundary quantum field theory (QFT). The metric is obtained from the Petz-Rényi mutual information defined with input correlations computed from the continuous wavelet transform. We show for free massless fermionic and bosonic QFTs that the emerging metric...
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Matthew Davis (University of Queensland)01/12/2025, 14:30Ultracold Atoms and Quantum TechnologyFocus session invited talk
Edge states are excitations in many-body systems that are spatially localised at the boundary. They exhibit desirable properties such as dissipationless transport and robustness against disorder. These features make them central to phenomena like the quantum Hall effect and topological insulators.
In a rotating planar Bose–Einstein condensates (BECs), the ground state forms a triangular...
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Jan Seidel01/12/2025, 14:30From Edge States to Emergent Phases: Advances in Topological and Strongly Correlated MaterialsFocus session invited talk
I will discuss our recent work on various ferroelectric and multiferroic oxide material systems using scanning probe microscopy (SPM) as the main investigative tool, with a focus on nanoscale functional property measurements of individual topological defects and new SPM instrument capability developments.
The nanoscale phonon properties of BiFeO₃ structural variants have rarely been...
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Weihang Zhang (UNSW Sydney)01/12/2025, 14:45
Baryon number violating (BNV) nucleon decays can serve as an interesting probe to physics beyond the Standard Model, especially in upcoming experiments with increased sensitivity. We investigate such decays using effective field theories and present relevant BNV operators at leading order in a low energy effective field theory framework extended with a light scalar. We derive current...
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Sam Scholten (School of Mathematics and Physics, The University of Queensland)01/12/2025, 15:00
Widefield defect microscopy is an emerging technology that provides spatially resolved quantitative maps of useful quantities, foremost of magnetic fields. These microscopes use color center spins in a crystalline host, which are controlled and measured optically to detect perturbations caused by fields in a proximal sample. Initial excitement around the nitrogen-vacancy (NV) defect in...
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Matthew Berrington (University of New South Wales)01/12/2025, 15:30
A transducer capable of converting quantum states from the microwave domain to the optical domain would greatly enhance the capabilities of superconducting qubits. The long-distance transmission capabilities permitted in the optical domain would allow distributed computing, paving the way for a worldwide quantum internet.
One approach to building a quantum transducer exploits the spatially...
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Dr James Zanotti (The University of Adelaide)01/12/2025, 16:30
The proton sits at the heart of every atom, yet its internal structure remains one of the deepest challenges in physics. Its properties, such as its mass and spin, do not arise simply from its constituent quarks, but from the complex, strongly interacting dynamics of Quantum Chromodynamics (QCD). At low energies, QCD is strongly coupled and resists analytic solutions, making the emergent...
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Prof. Toby Walsh (Computer Science and Engineering, University of New South Wales)01/12/2025, 18:00Invited/Keynote talk
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Chennupati Jagadish02/12/2025, 08:30
Semiconductors have played an important role in the development of information and communications technology, solar cells, solid state lighting. Nanowires are considered as building blocks for the next generation electronics and optoelectronics. In this talk, I will present the results on growth of nanowires, nanomembranes and microrings and their optical properties. Then I will discuss...
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Anastasia Borschevsky02/12/2025, 09:15
Search for violation of fundamental symmetries provides a unique opportunity for testing the Standard Model. Atomic and molecular experiments offer a low energy and comparatively inexpensive alternative to high energy accelerator research in this field. As the observable effects (such as parity violation, PV) are expected to be very small, highly sensitive systems and extremely precise...
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Laura Manenti02/12/2025, 10:40Combining astronomy and particle physics in the hunt for dark matterFocus session invited talk
After decades of not finding dark matter, we've gotten creative.
While liquid xenon detectors lead the direct search for 10-1000 GeV dark matter, sub-GeV dark matter particles from the local halo cannot transfer enough energy through nuclear scattering to be detected.
Blazars offer a solution. These supermassive black holes emit powerful particle jets directly toward Earth, and when...
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Dmitry Efimkin (Monash University)02/12/2025, 10:40
Over the past decade, the discovery of topological quantum matter—such as topological insulators, Weyl semimetals, and topological superconductors—has transformed condensed matter physics. Remarkably, many of these concepts are not confined to electrons in solids, but also apply to classical waves, from light and sound to water ripples and plasma oscillations.
In this talk, I will show how...
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Tom Perissinotto (The Australian National University)02/12/2025, 10:40
The existence of two-γ-phonon excited states in rare-earth nuclei remains a contentious issue in nuclear structure. While examples of single-phonon γ-vibrational states are prevalent in even-even deformed nuclei, identifying two-phonon excitations is challenging due to strength fragmentation and competing non-collective states. Although two-phonon states are predicted by the collective model...
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Jared Cole (RMIT University)02/12/2025, 10:40Quantum Science and TechnologyInvited/Keynote talk
Superconducting electronics are one of the best understood and most promising platforms for realising quantum information processing. Unfortunately they suffer from the presence of defects and imperfections. These include uncontrolled two-level systems, which reside in the materials used to construct them. These defects can lead to loss of energy, coherence, device aging and imperfect control...
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Dr David Cortie02/12/2025, 10:55
Nuclear magnetic resonance exploits the delicate sensitivity of nuclear spin to characterise the local dynamics and structure of the surrounding chemical and magnetic environment inside materials. β-NMR is an extension of this technique, similar to muon spectroscopy, which relies on the detection of anisotropic beta emission produced by a polarised radioactive isotope such as ⁸Li. This allows...
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Mr Aditya Babu (Australian National University)02/12/2025, 11:10
The calcium ($Z = 20$) nuclides have long been considered as “textbook” shell-model nuclei, with established doubly magic isotopes at $N = 20,~28$ and proposed shell gaps emerging at $N = 32,~34$. Despite this, a growing body of evidence suggests that the shell model requires deeper investigation in this region. In $^{48}$Ca, a reduction of the $f_{7/2}$ strength across the $N = 28$ shell gap...
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Tom Harris (RMIT)02/12/2025, 11:10Quantum Science and TechnologyContributed Oral
Photon loss is the dominant source of noise in optical quantum systems. The Gottesman-Kitaev-Preskill (GKP) bosonic code provides significant protection; however, even low levels of loss can generate uncorrectable errors that another concatenated code must handle. In this work, we characterize these errors by deriving analytic expressions for the logical channel that arises from pure loss...
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Md Tofajjol Hossen Bhuiyan (Monash University)02/12/2025, 11:10
The interplay between topology and magnetism in quantum materials gives rise to novel quantum phases, characterized by topologically protected surface states with non-trivial electronic band structures and complex spin textures. One of the most compelling outcomes of this interplay is the quantum anomalous Hall effect (QAHE)¹, where a single chiral edge mode enables dissipationless electron...
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Amelie Read (University of Sydney)02/12/2025, 11:10Combining astronomy and particle physics in the hunt for dark matterFocus session invited talk
The cosmic web is a vast large-scale network of interconnected filaments, clusters, and sheet-like walls surrounding voids that compose our Universe. The cosmic web is pivotal in galaxy formation and evolution, as studies have demonstrated a connection between the large-scale cosmic environment of a galaxy and its observed properties.
Caustic Skeleton (CS) theory offers a promising new...
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Zhao Liu (Centre for Quantum Technology Theory, Swinburne University of Technology, Melbourne 3122, Australia)02/12/2025, 11:25
We present an analytical study of the ground-state phase digram of dilute two-dimensional spin-1/2 Fermi gases exhibiting d-wave altermagnetic spin splitting under s-wave pairing. Within the Bogoliubov-de Gennes mean-field framework, four distinct phases are identified: a Bardeen-Scheriffer-Cooper-type superfluidity, a normal metallic phase, a nodal superfluidity with topological...
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Dr Behnam Tonekaboni (Infleqtion Australia)02/12/2025, 11:25Quantum Science and TechnologyContributed Oral
Cloud-based quantum computing is transforming how sensitive algorithms are executed, enabling remote access to shared hardware—but also introducing new risks of device impersonation and unauthorized access. We present a hardware-intrinsic authentication scheme based on Quantum Physical Unclonable Functions (Q-PUFs), which exploit fabrication-induced variations in quantum devices to create...
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Luke Johnstone02/12/2025, 11:25
A leading challenge in nuclear-structure research is to experimentally establish regions of oblate and triaxial deformation. Such a phenomenon is not only interesting from a fundamental structure perspective, but could also provide vital understanding and constraints of the flow of r-process nucleosynthesis in the vicinity of the $N=82$ shell closure [1]. The very neutron-rich Mo-Ru-Pd...
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Chris Power02/12/2025, 11:40Combining astronomy and particle physics in the hunt for dark matterFocus session invited talk
In this talk, I’ll explore how theoretical modelling—particularly N-body simulations and semi-analytic approaches—can shed light on the nature of dark matter and the formation of cosmic structure. I’ll highlight recent work on modelling classes of dark matter beyond ΛCDM, discuss approximate schemes that are especially useful for interpreting cosmological surveys, and examine how extended...
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Mr Jack Woodside (Australian National University)02/12/2025, 11:40
Comparison between large-basis shell-model calculations and experimental data gives insights into the emergence of nuclear collectivity. One experimental observable that can be examined is the $g$ factor, which gives a sensitive test of the proton versus neutron character of the nuclear states. There are extensive data on the first-excited states of even-even nuclei measured by the...
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Akib Karim (CSIRO)02/12/2025, 11:40Quantum Science and TechnologyContributed Oral
Quantum computers promise better scaling for problems that are intractable on classical computers, however current devices are limited by noise, which only permits shallow depth circuits and restricts the potential algorithms that can be run. Nonetheless, many error mitigation schemes have been developed which use extra quantum or classical resources to recover corrected observables from noisy...
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Francesco Campaioli (RMIT University)02/12/2025, 11:40
Singlet fission (SF) is an electronic transition that in the last decade has been under the spotlight for its applications in optoelectronics, from photovoltaics to spintronics. Despite considerable experimental and theoretical advancements, optimizing SF in materials like multichromophoric systems and molecular crystals remains a challenge, due to the complexity of its analysis beyond...
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Francesco Campaioli (RMIT University)02/12/2025, 11:55
Critical phenomena at finite temperature underpin a broad range of physical systems, yet their
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study remains challenging due to computational bottlenecks near phase transitions. Quantum annealers have attracted significant interest as a potential tool for accessing finite temperature criticality beyond classical reach, but their utility in precisely resolving criticality has remained limited... -
James Stuchbery (Department of Nuclear Physics and Accelerator Applications, Research School of Physics, Australian National University.)02/12/2025, 11:55
Simulations of radiation and particle transport via Monte Carlo (MC) codes are integral to the design and safety of nuclear reactors, medical radiation systems and detector systems. A lesser known application of these simulations is in defence and national security, where such tools can provide crucial information for threat assessments and analysis of real world detector readings. These...
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Ritik Sareen (RMIT University), Dr Akram Youssry (RMIT University)02/12/2025, 11:55Quantum Science and TechnologyContributed Oral
Quantum technology is expected to have revolutionary impact on different areas including computation, communication, and sensing. The first step in any quantum application is state preparation, where it is required to transfer the system from a fixed initial state to a final target state. This task can be challenging to perform, especially in non-Markovian open quantum systems. Invariant-based...
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Joss Bland-Hawthorn02/12/2025, 12:10Combining astronomy and particle physics in the hunt for dark matterFocus session invited talk
The spatial and velocity distributions of dark matter in the local environment are a crucial input to searches for particle dark matter, for both direct experiments based on Earth, and astronomical observations of the galactic centre. Despite this, there are considerable uncertainties that directly impact the current and future sensitivity to particle dark matter signals. I will summarise what...
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Nathan Langford (Centre for Quantum Software and Information, School of Mathematical and Physical Sciences, University of Technology Sydney)02/12/2025, 12:10Quantum Science and TechnologyContributed Oral
Simulating chaotic systems is difficult, due to randomness from divergent sensitivity to system parameters, and the same holds for quantum chaos—often understood as dynamics in quantum systems that exhibit classical chaos in a large-system limit. Yet in quantum technologies, quantum chaos also arises in systems which do not possess any straightforward classical limit. For example, quantum...
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Dr Peter Jonathan Cox (The University of Melbourne)02/12/2025, 12:10
Sub-GeV mass dark matter has seen significant theoretical and experimental interest in recent years, with many proposed and upcoming direct detection experiments targeting this regime. In this talk, I will present new constraints on hadronically-interacting dark matter that arise from one-loop interactions with photons and electrons during big bang nucleosynthesis, as well as from rare meson...
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Mr Enayet Hossain (School of Physics and Astronomy, Monash University, Clayton, VIC 3800, Australia; ARC Centre of Excellence for Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, VIC 3800, Australia)02/12/2025, 12:10
Topological insulators (TIs) are a class of materials that hosts insulating bulk states and topologically protected metallic surface states, arising from strong spin-orbit coupling and time-reversal symmetry1,2. When time-reversal symmetry is broken—such as by introducing magnetism—these surface states can become gapped, giving rise to novel quantum phases like quantum anomalous Hall effect...
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Dr Hakop Pashayan (Hon Hai (Foxconn) Research Institute, Free University Berlin)02/12/2025, 12:25Quantum Science and TechnologyContributed Oral
Classical simulations of noisy quantum circuits is instrumental to our understanding of the behavior of real world quantum systems and the identification of regimes where one expects quantum advantage. The presence of noise can decay quantum entanglement. Our work capitalizes on this idea. We employ new methods that push the boundaries of noise-induced entanglement decay, using it to...
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Dr Prasanna Pakkiam (University of Queensland SQDLab/NQCT)02/12/2025, 12:25
We experimentally realise the theoretical proposal for in-situ tunable photonic edge states emerging from qubits coupled to a waveguide with a photonic bandgap. These edge-states are directional, exhibiting theoretically zero population in the opposite direction. Our experiment implements a tunable Rice-Mele waveguide configuration, where the directionality of edge states is controlled in-situ...
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Michelle Durant (AINSE)02/12/2025, 13:35Contributed Oral
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Dr PETER LAMB02/12/2025, 15:30
The gravitational redshift, as originally proposed by Einstein, has light emitted from atoms deeper in a gravitational potential redshifted. The frequencies of atoms slow in proportion to the fractional decrease in stored energy when the field from surrounding mass increases. Gravitational attraction arises from a loss in mass (stored energy) when closer to other massive bodies. The decrease...
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Soumik Mahanti (University of Technology Sydney)02/12/2025, 15:30
Noise characterisation is a critical bottleneck in scaling quantum technologies. While uncorrelated errors are relatively well understood, correlated or non-Markovian noise, where memory effects persist across multiple operations remains far harder to capture. This non-Markovian noise has been detected in state-of-the-art quantum devices like those of IBM and Google. However, standard...
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Griffin Katrivesis Brown (Australian National University)02/12/2025, 15:30
Venus at ultraviolet (UV) wavelengths exhibits distinct light and dark markings (Rossow et al., 1980). The discovery of sulfur dioxide ($SO_2$) using a ground-based high resolution spectrometer explained Venus’ albedo at wavelengths < 320 nm but not these dark markings at 320-500 nm (Esposito et al., 1979; Pollack et al.; 1980, Pérez-Hoyos et al., 2018). So at least one other absorber must be...
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Abhishek Rawat (Macquarie University)02/12/2025, 15:30
Quantum simulation of molecular Hamiltonians represents one of the most promising applications of quantum computing. At the heart of most quantum simulation algorithms lies the fundamental challenge of decomposing the evolution operator $e^{-iHt}$ for a composite Hamiltonian $H = X + Y$ into a sequence of implementable quantum gates. Product formulae, also known as Trotter-Suzuki...
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Lula Abdirashid Ali (University of Adelaide)02/12/2025, 15:30
The strong interaction binds up and down quarks together to form hadrons such as protons and neutrons and heavier states containing strange or charm quarks. At low energies, hadron properties cannot be determined via analytic or perturbative approaches to quantum chromodynamics (QCD). Instead, we make use of a numerical approach to QCD known as lattice QCD (LQCD). In this work, we calculate...
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Luke Kelly (The University of Queensland)02/12/2025, 15:30
Turbulence is one of the most elusive topics in physics that remains to be solved. Superfluid helium is a strongly interacting quantum fluid—characterised by a vanishing viscosity—and has been a vastly successful platform in furthering our understanding of turbulent flows in recent years [1]. The dynamics of quantised vortices play an essential role in the classical-to-quantum transition of...
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Enbang Li (School of Physics, EIS, University of Wollongong, NSW 2522, Australia)02/12/2025, 15:30
The measured orbital velocity distributions of stars in galaxies and the observed gravitational lensing effects in galaxy clusters suggest that there should be more mass than that can be explained by the visible mass of stars, gas and dust in the galaxies. This unseen mass or matter, generally referred to as dark matter, has puzzled physicists for a few decades and has now become one of the...
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Narise Williams (The University of Physics)02/12/2025, 15:30
As dark matter continues to evade direct detection, new physics, such as theoretical particles, must be hypothesised to explain inconsistencies in astrophysical and cosmological observations. One of these proposed hypothetical particles, the dark photon, could be detected by liquid noble gas scintillators, such as the XENON experiment, through ionisation in an atom via the photoelectric...
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Ke Ri Liang (The University of Sydney)02/12/2025, 15:30
Interest in 2D superconducting materials has been gaining momentum in recent years due to its potential applications for nanoscale devices such as superconducting transistors, quantum interferometers, and superconducting qubits. In particular, a family of materials known as layered hexagonal metal borides ($MB_2$) has garnered intrigue as a probe for investigating the behaviour of...
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Max Fleming02/12/2025, 15:30
Quantum tunnelling is a fundamental process, ubiquitous across nature and technology, with a prominent role in phenomena ranging from stellar fusion and ATP synthesis to nanoscale electronics. Standard descriptions based on single-particle quantum mechanics (QM) or its relativistic version (RQM) have demonstrated utility, accurately predicting alpha particle decay half-lives across 26 orders...
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Spiro Gicev (The University of Melbourne)02/12/2025, 15:30
Artificial Neural Networks (ANNs) are a promising approach to the decoding problem of Quantum Error Correction (QEC), but have observed consistent difficulty when generalising performance to larger QEC codes. Recent scalability-focused approaches have split the decoding workload by using local ANNs to perform initial syndrome processing and leaving final processing to a global residual...
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Yi-Hsun Chen (University of Queensland)02/12/2025, 15:30
Advanced epitaxy techniques have become essential for superconducting quantum circuits due to their ability to fabricate high-quality and low-loss superconductors. Atomic layer deposition, which provides precise layer-by-layer growth, is widely adopted in complex 3D architectures in advanced silicon manufacturing, such as FinFETs and gate-all-around transistors. In this study, we investigate...
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Franklin Mills (Australian National University)02/12/2025, 15:30
The atmospheres of Venus and Mars are primarily CO$_2$. CO$_2$ photolyses at wavelengths $\lesssim$ 200 nm to CO and O. Direct recombination via CO+O+M $\rightarrow$ CO$_2$+M is very slow so the rate of production of CO$_2$ to balance its loss via photolysis is controlled by the abundances of trace radicals that catalyse production of CO$_2$ (eg., Yung and DeMore, Icarus 51, 199, 1982). These...
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Rose Wilkens02/12/2025, 15:30
Secondary electrons (SEs) generated by electron and soft X-ray irradiation play a central role in radiation-induced modification of materials. Their short mean free paths and strong coupling to electronic excitations make them key agents in processes such as bond scission, desorption, and cross-linking. Understanding SE emission from carbon is particularly important because carbon forms the...
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Sanni Kapatel (P D Patel Institute of Applied Sciences)02/12/2025, 15:30
Electrocatalytic glycerol oxidation reaction (GOR) has emerged as a sustainable and energy-efficient alternative to the oxygen evolution reaction (OER), offering the dual benefit of hydrogen (H₂) generation and selective upgrading of biomass-derived glycerol into value-added chemicals like formate. However, the development of cost-effective, active, and stable electrocatalysts for GOR at low...
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MICHAEL WALKER (Australian Institute of Physics)02/12/2025, 15:30
We claim that quantum collapse, as per the Copenhagen interpretation of quantum mechanics, follows naturally from the energetics of measurement. We argue that a realistic device generates an interaction energy that drives a random walk in Hilbert space and generates the probabilistic interpretation of Born.
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Shubhangi Gunjal (Australian National University)02/12/2025, 15:30
We present our ongoing efforts toward the preparation of Bose–Einstein condensate (BEC) of metastable helium [1], which enables several atomic quantum experiments.
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To achieve a high phase-space density for BEC, the sequence starts with the atomic source and Low velocity intense source(LVIS), followed by MOT,compressed MOT,magnetic trap,1D Doppler cooling, and ends with transfer to an optical... -
David Cortie02/12/2025, 15:30
The pioneering experiments of Fermi and others in the 1940s revealed that thermal and cold neutrons exhibit coherent quantum wave phenomena such as interference, diffraction, and reflection [1].
It was soon recognised that this unique quantum beam offered major advantages for studying atomic structures in solids. Today, numerous international facilities produce brilliant neutron beams to...
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Dr Neha Lalotra (SHRI MATA VAISHNO DEVI UNIVERSITY, KATRA, J&K)02/12/2025, 15:30
Rare-earth (RE) doped materials have emerged as promising candidates for photonic and optoelectronic applications due to their outstanding luminescent properties. Among these, lanthanide-activated phosphate-based phosphors stand out for their unique combination of mechanical, optical, electrical, magnetic and chemical characteristics, alongside their eco-friendliness, cost-effectiveness and...
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Gustavo de Miranda (University of Sydney)02/12/2025, 15:30
Dicke states, permutationally symmetric superpositions of two-level excitations, are pivotal resources in quantum information science and metrology [1, 2]. Their robust multipartite entanglement makes them ideal candidates for surpassing standard quantum limits in sensing and computation. However, generating arbitrary symmetric states in ion traps, Dicke states being a subset, remains...
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Sarah Bamford (La Trobe University)02/12/2025, 15:30
Unsupervised machine learning, specifically self-organizing maps with relational perspective mapping (SOM-RPM), is a practical tool for thoughtful and considered analysis of complex hyperspectral data sets. The SOM-RPM approach treats each pixel in a hyperspectral image as a sample, clustering spectra based on similarity. This method creates a colour-coded similarity map in which changes in...
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Anmol Gandhi (Independent Researcher)02/12/2025, 15:30
Galaxy mergers play a pivotal role in shaping the structure and evolution of galaxies. This study investigates how spiral galaxies morphologically transform after merging with companion galaxies, focusing on the relationship between initial merger conditions and the resulting structures. Observational data from SDSS and HST archives will be integrated with high-resolution simulations like...
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Aiden Thurloe (University Of Sydney)02/12/2025, 15:30
Precise control of quantum states is a key requirement for the development of quantum-based technologies. Engineering point defects in low-dimensional materials provides a promising approach to achieving this control, as strong in-plane coupling can accelerate quantum gate operations while mitigating decoherence. Hexagonally layered beryllium oxide (h-BeO) is a recently synthesised...
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Parul Sharma (Cluster University of Jammu)02/12/2025, 15:30
This study presents a simplistic way to synthesize LiSr(1-x)VO4: xMn2+ nanophosphors with 0.25 ≤x ≤3.0 mol% by using combustion method. The structural, spectral and optical properties were examined using XRD, UV-Vis spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive Analysis of X-rays (EDAX), Transmission Electron Microscopy (TEM) and Photoluminescence (PL) spectroscopy. The...
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WILLIAM ZEALEY (University of Wollongong, School of Physics)02/12/2025, 15:30
The Medusae Fossae Formation [MFF] is a significant and complex geological feature on Mars that extends for more than 5,000 km along the equator of Mars. The soft, easily eroded deposits rise 4km from the Northern Plains of Elysium Planitia to the Southern Highlands. It has been suggested that the MMF was emplaced during the Hesperian epoch (3.8-3.0 billion years ago) and has been physically...
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Angus King (The University of Sydney)02/12/2025, 15:30
Levitated optomechanics offers a promising pathway to explore the boundary between quantum and classical physics, as well as for quantum-enhanced sensing with mesoscopic objects. In particular, levitated silica nanoparticles cooled to their quantum ground state could enable fundamental tests of quantum mechanics. Achieving this goal requires efficient particle loading into ultra-high vacuum...
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Sama Baloch02/12/2025, 15:30
Understanding the processes which shut down star formation in galaxies, commonly
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known as galaxy quenching, is a central question in astrophysics. In this
project, I investigate how a galaxy’s location and motion within its group
environment influence its star-forming activity, using data from the Deep
Extragalactic VIsible Legacy Survey (DEVILS).
Focusing on satellite galaxies, I explore... -
Dr Akram Youssry (RMIT University)02/12/2025, 15:30
Implementing arbitrary unitary transformations is crucial for applications in quantum computing, signal processing, and machine learning. Unitaries govern quantum state evolution, enabling reversible transformations critical in quantum tasks like cryptography and simulation and playing key roles in classical domains such as dimensionality reduction and signal compression. Integrated optical...
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Xiawa Wang (Duke Kunshan University)02/12/2025, 16:30
The search for novel semiconductors with sub-1 eV bandgaps is critical for efficient infrared photon-to-electricity conversion from high-temperature thermal emitters in thermophotovoltaic (TPV) systems. Double perovskites with the general formula A₂B′B″X₆ offer exceptional chemical tunability, making them attractive for targeted infrared bandgap engineering. For TPV devices operating with...
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Ewan Wallace (University of Adelaide)02/12/2025, 16:30
There is growing interest in the application of quantum information theory concepts to particle physics model-building. Recent research has established that the extremization of entanglement in particle scattering provides a natural way to realise interesting theoretical structure, both within and without the Standard Model. The success of these entanglement studies begs the question: can...
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Katarina Miljkovic (Curtin University)02/12/2025, 16:30
Impact cratering is a physical process causing geological changes on all planetary surfaces. It is one of common processes responsible for crustal structure and evolution over geological timescales. High-fidelity shock physics simulations are made to track the fate of a planetary impactor and associated shock changes in the target material during a non-catastrophic impact event. The size of...
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Zixin Huang (RMIT University)02/12/2025, 16:30Quantum Science and TechnologyInvited/Keynote talk
Optical Very Long Baseline Interferometry offers the potential for unprecedented angular resolution in both astronomical imaging and precision measurements. Classical approaches, however, face significant limitations due to photon loss, background noise, and the requirements for dynamical delay lines over large distances.
We surveys recent developments in quantum-enabled VLBI, which aim to...
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Mr Shannon Ray (University of Queensland)02/12/2025, 16:45
Parity nonconservation (PNC) in atoms is a tiny weak interaction effect,
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arising largely from Z-boson exchange between atomic electrons and neutrons. This has been a rich area of study for the past few decades with the weak charge measured with up to a fraction of a percent precision, and the nuclear anapole moment experimentally observed once, with an uncertainty approaching 10%. Of recent... -
Masaaki Doi (Tohoku Gakuin University)02/12/2025, 16:45
In this work, fabrication of Mn3-xFexGa epitaxial thin films by using an ultra-high vacuum electron beam evaporation system, clarifying the relationship between composition of Fe, magnetic properties, crystal structure and film thickness were studied. The epitaxial growth of L21- ordered Mn-Fe-Ga thin films has been confirmed on the MgO (001) single crystalline substrate by using in-situ RHEED...
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ori somech (PhD student)02/12/2025, 17:00Quantum Science and TechnologyContributed Oral
For more than half a century, the standard quantum limit (SQL) was thought to limit the laser coherence $\mathfrak{C}$ –– the number of photons emitted from the laser into the beam in one coherence time –– to a scaling $\Theta(\mu^2)$, where $\mu$ is the mean number of optical-frequency excitations stored inside the laser. However, recently it has been shown [Baker et al., Nat. Phys. 17, 179...
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Ian Van Schalkwyk02/12/2025, 17:00
The electromagnetic form factor, $F_\pi(Q^2)$, of the pion describes how quarks are distributed inside the pion and is of considerable phenomenological interest. However, $F_\pi(Q^2)$ at large values of momentum transfer, $Q^2$, has proven difficult to measure experimentally. This motivates numerical approaches to its calculations, such as lattice QCD. Though Lattice QCD calculations of...
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Jadon Lin02/12/2025, 17:00
Lightsails are an enticing proposal for spacecraft that can travel to nearby star systems such as Alpha Centauri. Their advantage is their ability to reach speeds up to $0.2c$ when accelerated by high-power lasers. One significant obstacle to lightsail missions is that the sail experiences perturbations (e.g. from laser-beam noise or atmospheric effects) that act to eject the sail from the...
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Kristian Caracciolo (La Trobe University)02/12/2025, 17:00
Biological function is closely linked to cell morphology and subcellular structure, making 3D imaging techniques an essential tool for understanding complex biological processes. Typically, 3D imaging involves staining and labelling, which can be time-consuming, error-prone, and reliant on toxic reagents. Imaging based on the intrinsic biophysical properties of cells and tissues, such as...
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Dr Hui Hu (Swinburne University of Technology)02/12/2025, 17:15Quantum Science and TechnologyContributed Oral
We calculate the exact spectral function of a single impurity repulsively interacting with a bath of fermions in one-dimensional lattices, by deriving the explicit expression of the form factor for both regular Bethe states and the irregular spin-flip state and η-pairing state, based on the exactly solvable one dimensional Hubbard model. While at low impurity momentum Q ∼ 0 the spectral...
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Abhijith Aswathy Gopakumar (Department of Nuclear Physics and Accelerator Applications, The Australian National University)02/12/2025, 17:15
Neutron-rich nuclei around A$\sim$100 present intriguing cases in nuclear structure due to their significant deformation and complex shapes, including predicted triaxiality as well as rare oblate-deformed ground states. These features pose challenges for theoretical models, especially in describing the abrupt shape transitions observed between N = 58 and 60. Even-even nuclei in this region...
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Justin Vella (University of Sydney)02/12/2025, 17:15
The use of photonic alternatives to conventional optical trains in telescope instrumentation offers key advantages in satisfying near-impossible tasks demanded by astrophysics (such as imaging Earth-sized exoplanets within the habitable zone of their host star or their formation within a proto-planetary disc).
Current imaging instruments using adaptive optics account for atmospheric seeing...
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Juliana Avtarovski (University of Wollongong)02/12/2025, 17:15
The natural mineral clinoatacamite, [Cu2Cl(OH)3], exhibits low-temperature, frustrated magnetic behaviour where competing interactions are responsible for novel magnetic properties. Attempts to establish the magnetic phases in this material have been undertaken and an unconventional applied field (H||b) phase diagram has been revealed [1]. Two critical transition temperatures at zero field...
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Nastaran Farhang (University of Sydney)02/12/2025, 17:30
We present a new catalog for solar flares derived from Geostationary Operational Environmental Satellite (GOES) data using a deep learning–based detection method. Unlike the conventional rule-based methods, our approach identifies flare rises directly from the time series with a model that integrates multi-scale convolutional layers, a bidirectional long short-term memory (BiLSTM), and...
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Aaron Tranter (Australian National University)02/12/2025, 17:30Quantum Science and TechnologyContributed Oral
Optical quantum memories are an essential optical technology with applications in quantum communications and networking, quantum sensing and optical quantum computing. Ensemble optical memories rely on a controllable, coherent interaction between light and a long-lived electronic state, with the light absorbed into and regenerated from a collective excitation of the ensemble of emitters....
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Tasman Harvey (Optical Sciences Centre, Department of Physics and Astronomy, Swinburne University of Technology, Australia)02/12/2025, 17:30
Accelerator storage rings for light sources and colliders are highly sensitive to magnet misalignments and field errors. These imperfections distort the orbit, which negatively impact the brightness or luminosity. Precise orbit correction plays a vital role in optimising the performance of next generation lepton accelerators.
CERN’s proposed e+/e- Future Circular Collider (FCC-ee) is a...
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Denis Ilin (University of Technology Sydney)02/12/2025, 17:30
High harmonic generation (HHG) is a physical effect which happens when a strong driving laser acts on atomic, molecular, or solid systems. As a result, a system emits at frequencies of integer multiples of the driving laser frequency [1]. It was also shown that including correlations between atoms can generate entangled and squeezed light or entangled photon pairs [2]. These can be an...
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Kyriakos Tapinou (University of Sydney - SIFA)02/12/2025, 17:45
Despite the large quantity of observational data available, the Sun’s magnetic field dynamics remain a mystery. Solar flares and eruptions, which result from the field evolution, can have significant impacts on Earth and our space environment. Data-driven modelling of the solar magnetic field uses photospheric observations as boundary conditions to drive a simulation of the field above the...
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Dominic Berry02/12/2025, 17:45Quantum Science and TechnologyContributed Oral
The pursuit of highly coherent light sources is fundamental to advancements in quantum metrology, sensing, and communication. Although the Schawlow-Townes limit, where coherence scales as the square of the number of photons in the laser cavity, has long defined the standard for laser coherence, recent work [1] established a more fundamental limit, the "Heisenberg limit", where coherence scales...
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John Ingall (The University of Newcastle, Australia)02/12/2025, 17:45
The effective design of new materials for sustainable energy conversion can be facilitated by the accurate prediction of electronic properties with moderate computational complexity and cost. The self-interaction error (SIE) of Kohn-Sham density functional theory (KS-DFT) is a non-physical, non-linear dependence of an orbital's energy on its own fractional occupation [Dabo et al., Phys. Rev....
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Prof. Yuanhua Sang (Shandong University)02/12/2025, 18:00
In light of the integration requirements of optoelectronic functional devices, the multifunctional optoelectronic crystal lithium niobate has emerged as a crucial matrix material. This development has imposed new demands on crystals, including uniformity of crystal structure, stoichiometric crystals, large diameter, and long equal diameter. Through the innovation of the growth technology of...
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Alina Donea (Monash University)03/12/2025, 08:30
Sunspots, together with their stellar counterparts—starspots—serve as powerful tracers of magnetic activity on solar and stellar surfaces. Although visually dark, these regions are acoustically rich, as their intricate magnetic structures strongly influence the propagation of pressure waves. In this work, I present a comparative helioseismic investigation of sunspots on the Sun and extend the...
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Helen Lorigan (Laboratories Credit Union)03/12/2025, 09:15
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Joshua Machacek (Research School of Physics, Australian National University)03/12/2025, 09:25
Antimatter remains one of the most intriguing frontiers in modern physics. The most readily available form of antimatter is the positron, the electron antiparticle, which can briefly bind with an electron to form positronium (Ps)—a short-lived, hydrogenic ‘atom’. Positron and positronium can used to explore and test our understanding of scattering dynamics and fragmentation in antiparticle...
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Mr Yuri Venturini (CAEN SpA)03/12/2025, 10:45
High-precision time measurements are crucial for both high-energy physics experiments and advanced medical imaging applications, such as Positron Emission Tomography (PET). Future detector systems require readout electronics that combine sub-10 ps timing resolution with scalability, compactness, and efficient multi-channel integration.
The CAEN A5203 module, part of the FERS 5200 system,...
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Jayden Newstead (University of Melbourne)03/12/2025, 10:45
Dark matter detectors, in particular those based on dielectric materials, are among the best tools for probing light dark matter. In the coming years detectors of this type will become sensitive to solar neutrino scattering. For dark matter scattering at very low recoil energies, collective excitations of the electrons in the solid become important. In this talk I'll share some new results...
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Scott Liles (UNSW)03/12/2025, 10:45
The global effort to develop a quantum computer is driving the search for scalable methods to manufacture quantum chips and qubits. One promising pathway is to adapt the mature and highly-scalable silicon manufacturing processes that underpin modern electronics. However, the demands on quantum devices are markedly different from those placed on conventional transistors. Quantum chips must...
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Dana Anderson03/12/2025, 10:45Quantum Science and TechnologyInvited/Keynote talk
Matter wave-based sensors have demonstrated exquisite sensitivity and precision, for example, for acceleration and rotation measurements that utilize interferometry. This work takes a new look at matter waves, in particular those associated with alternating currents (AC) of interacting identical neutral particles such as rubidium atoms. The semi-classical mechanics of such waves are...
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Mr Jacob Wright (University of Wollongong)03/12/2025, 11:00
Single Event Effects are potentially catastrophic electric and electronic effects created in analog and digital electronic devices exposed to ionising radiation. They are particularly dangerous in Space. and so a radiation hardness qualification procedure is often required for electronic devices to be considered Sapce safe. Qualification requires the use of hadron accelerators but alternative...
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Christina Giarmatzi (Macquarie University)03/12/2025, 11:15Quantum Science and TechnologyContributed Oral
All current quantum devices suffer from noise originating from system-environment interactions. Often the noise is non-Markovian, i.e. correlated across the time-steps of a quantum circuit—as reported in spin silicon platforms and the superconducting devices of IBM and Google. However, most characterisation techniques assume Markovian (uncorrelated) noise, which results in inaccurate gate...
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Prof. Stephan Rachel03/12/2025, 11:15
Majorana modes (MMs), the elementary building blocks for the quantum bits of topological quantum computers, are known to suffer from hybridization when they get too close to each other. In that case, their wavefunctions start to overlap and the energy of the MMs is pushed to finite energies, causing errors during the braiding process of the MMs. Here we introduce negative hybridization, a...
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Tim Weiss (RMIT University)03/12/2025, 11:15
Nonlinear sources of quantum light are foundational to nearly all optical quantum technologies and are actively advancing toward real-world deployment. Achieving this goal requires fabrication capabilities to be scaled to industrial standards, necessitating precise modeling tools that can both guide device design within realistic fabrication constraints and enable accurate post-fabrication...
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Antoine Cools (University of Melbourne)03/12/2025, 11:15
SABRE is an international collaboration that will operate similar particle detectors in the Northern (SABRE North) and Southern Hemispheres (SABRE South). This innovative approach aims to distinguish potential dark matter signals from seasonal backgrounds: a pioneering strategy only feasible with a Southern Hemisphere experiment. SABRE South is located at the Stawell Underground Physics...
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Marcus Goffage (University of New South Wales)03/12/2025, 11:30
Qubits based on Majorana zero modes (MZMs) in superconductor–semiconductor nanowires have attracted intense interest as a platform for utility-scale quantum computing, due to their promise of intrinsically low error rates enabled by topological protection. These error rates are expected to be suppressed exponentially with increasing nanowire length or decreasing temperature. Here we identify a...
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Abhinash Roy (Macquarie University)03/12/2025, 11:30Quantum Science and TechnologyContributed Oral
Precise and robust control of sequences of quantum operations is essential for quantum information processing. The present quantum hardware is plagued with correlated noise, i.e., non-Markovian noise. The existing mitigation strategies, which are based on Markovian assumption, are ineffective. Multi-time process tomography aims to provide a complete description of the nature and strength of...
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Yun Peng Li (University of Sydney)03/12/2025, 11:30
The usefulness and importance of light polarisation have skyrocketed in recent times with applications found
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in biomedicine, imaging, characterisation of biological and chemical systems, and astrophysics just to name a
few. Ecologically, more and more examples of flora and fauna are found to utilise the polarisation of light for
growth, navigation, and communication, increasing the need for... -
Amrita Mukherjee (UNSW)03/12/2025, 11:30
The interplay between theoretical cosmology and particle physics seeks to answer fundamental questions related to our Universe’s formation and constituents. Today, it is well established that dark matter (DM) accounts for nearly 30% of the cosmic energy budget [1]. Several particle physics models of DM are being extensively studied; however, there has yet to be any luck with its detection. The...
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Michael Schmidt (UNSW Sydney)03/12/2025, 11:45
Baryon number is conserved in the Standard Model (SM). Its violation is one of the most compelling phenomena predicted by physics beyond the SM. I will discuss the theoretical description of baryon-number-violating nucleon decays within the framework of effective field theory, which can be used to interpret existing data of Super-Kamiokande and upcoming data from the next-generation neutrino...
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Larissa Huston (CSIRO Minerals Resources)03/12/2025, 11:45
In many minerals, the magnetic permeability and/or the resistance depends on the applied magnetic field. These properties, magnetic hysteresis and magnetoresistance, could therefore be used as a way of identifying minerals to differentiate ore from waste in the mining industry. This application requires the properties to be measured without electrical contacts, operate at room temperature and...
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Dr Hamed Arianfard (Quantum Photonics Laboratory and Centre for Quantum Computation and Communication Technology, RMIT University, Melbourne, VIC 3000, Australia)03/12/2025, 11:45
We present Fano-like resonances in silicon-on-insulator (SOI) nanowire resonators composed of coupled Sagnac interferometers (SIs). By tuning the reflectivity of each SI and the inter-coupling strength, we precisely control coherent mode interference to realize high-performance optical analogues of Fano resonances. The device, designed and fabricated on an SOI platform, is analyzed...
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Mr Frank Scuccimarra (The University of Sydney)03/12/2025, 11:45Quantum Science and TechnologyContributed Oral
Quantum sensing leverages quantum resources to achieve measurement capabilities beyond what is possible classically [1,2]. While there is great focus on precision parameter estimation, an underexplored application is single-shot binary-decision making, where the task is to decide whether a signal has been detected. This is particularly advantageous when the underlying event is rare. Quantum...
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Sherryn MacLeod (University of Wollongong (UOW))03/12/2025, 12:00
Non-destructive mapping of elemental distribution in bulk samples is hard to achieve with standard analytical tools: neutron activation analysis (NAA) allows for elemental identification but provides no spatial localisation, while X-ray or neutron computed tomography (CT) can provide structural information but often fall short in confidently extrapolating elemental distributions. We...
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Yow-Ming Hu (The Australian National University)03/12/2025, 12:00
Point defects in spinor fields protected by topological invariants, the winding of the spinor configuration around the centre of the defect, have attracted a great amount of interests as they present a potential platform for spintronics and quantum communication. In this work, we present the generation of momentum-space pseudospin (polarization) defects in non-Hermitian exciton-polariton...
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Navneet Krishnan (Australian National University)03/12/2025, 12:00
Recent observations by the CMS and ATLAS experiments at the LHC have reported anomalies in the production of tau-lepton and photon pairs over expected background at an invariant mass of ~95 GeV. Taken with an older result from LEP data showing a similar anomaly in the production of b-quark pairs, these results raise the possibility of an as-yet unknown resonance at 95 GeV causing each of these...
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Angsar Manatuly (Centre for Quantum Software and Information, School of Mathematical and Physical Sciences, University of Technology Sydney)03/12/2025, 12:00Quantum Science and TechnologyContributed Oral
Digital quantum simulation (DQS) is a promising application of quantum computers. Typically, short Trotter step sizes are required to realise accurate DQS. In the context of Trotterised DQS, it is also useful to be able to tune interaction times and even implement “negative-time” gates, when implementing higher-order digitisation algorithms and to control the amount of digitisation error,...
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Adrien Di Lonardo (University of Technology Sydney)03/12/2025, 12:15Quantum Science and TechnologyContributed Oral
Quantum hardware processing power is normally optimised by minimising decoherence effects from unwanted interactions with noisy environments. Yet paradoxically, carefully tailored bath interactions can be exploited to preserve coherence rather than degrade it. Engineered dissipation, or reservoir engineering, introduces tailored couplings between a quantum system and its environment to serve...
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Ananthakrishnan Ravindran (SUBATECH, IMT Atlantique & The University of Melbourne)03/12/2025, 12:15
XLZD is a future dark-matter direct detection experiment that will use a liquid Xenon (LXe) based Time Projection Chamber (TPC) to search primarily for Weakly Interacting Massive Particles (WIMPs), with sensitivity all the way to the neutrino-fog for WIMP candidates with mass above about 3 GeV/c^2. The typical channel used to search for these particles is through their recoil on the nuclei of...
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Karen Livesey (University of Newcastle & University of Colorado - Colorado Springs)03/12/2025, 12:15
Magnetic thin films are important for computing technologies, where atomic-scale control of magnetic properties is required. Here, we present a 1D micromagnetic simulator (microM-ref1D) for thin film magnets with twisted magnetization profiles. Importantly, it is integrated with the Ref1D software for polarized neutron reflectometry fitting to accurately extract magnetic parameters.
Using...
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Dr Pravin Kumar Dahal (CSIRO)03/12/2025, 12:30Quantum Science and TechnologyContributed Oral
The Unruh effect, resulting from the entanglement of modes across the right and left wedges of Rindler spacetime, predicts that a uniformly accelerating observer perceives the Minkowski vacuum as a thermal bath. Despite its theoretical significance, this effect remains undetected. The Unruh effect has a timelike counterpart due to the entanglement between past and future Rindler light cones....
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Elizabeth Angstmann (University of New South Wales)04/12/2025, 08:30
Over the past five years, university education has undergone significant transformation. The lingering effects of COVID lockdowns have reduced student attendance, while the widespread availability of AI tools has made it easier for students to outsource the cognitive effort behind many assessments. These shifts have contributed to increased isolation, declining wellbeing, and a rise in mental...
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Hui Zhai (Tsinghua University)04/12/2025, 09:15
Quantum Many-Body Correlation from Controlled Dynamics
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Jessica Eastman (Australian National University)04/12/2025, 10:40
Atomic matter-wave interferometers have demonstrated exceptional long-term stability in precision rotation sensing under controlled laboratory conditions [1]. Translating this performance to compact, mobile platforms could revolutionise navigation technologies. Guided matter-wave gyroscopes, which confine ultracold atomic gases in optical potentials, offer a promising route toward...
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Ms Catherine Merx (The University of Newcastle)04/12/2025, 10:40
This study presents a novel approach to imaging diffuse environments using non-ionising optical tomography combined with inverse Radon reconstruction techniques. We developed and characterised gelatin-based phantom materials with distinct spectral properties, measured using a CloudSpec spectrophotometer across the 350–850 nm range. These materials simulate biological tissues and enable precise...
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Anastasia Lonshakova04/12/2025, 10:40
Einstein-First is an Australian initiative with a decade-long history. Its mission is to modernise school science curricula by embedding Einsteinian physics—relativity, quantum mechanics, and their technological applications—into core science education. The revolutionary physics of the 20th century is almost entirely absent from schools, reserved for the small minority who study physics in...
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Prof. Hui Zhai (Tsinghua University)04/12/2025, 10:40Ultracold Atoms and Quantum TechnologyFocus session invited talk
I will discuss how to utilize highly controllable quantum dynamics to study correlations in quantum many-body systems, particularly the strong correlations of quantum critical states. I will discuss two theories of non-hermitian linear response and the finite-size scaling theory of the Kibble-Zurek dynamics, and I will talk about their recent experimental realizations in cold atom systems.
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Jodie Bradby (The Australian National University)04/12/2025, 10:40
This study investigates the impact of shear strain on the phase transformation behavior of Si and Ge under high-pressure conditions. Si and Ge are known to undergo a series of pressure-induced phase transformations, resulting in new phases with technological potential [1,2]. Utilizing both traditional diamond anvil cells (DAC) and a new rotational diamond anvil cell we demonstrate that...
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Roger Lewis04/12/2025, 11:10
As has been recently pointed out by Pagnoni et al. [[1]], care is required in applying the Heisenberg uncertainty relations. This care has sometimes been insufficiently realised in pedagogical settings. A case in point is the hydrogen atom. Here the singularity of the Coulomb potential causes difficulties in utilising the uncertainty relations. Clarification of this point is expected to...
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Anjay Manian (The University of Wollongong)04/12/2025, 11:10
The interactions of biological processes with magnetic fields can have significant impacts, with a strong example of this being magnetosensitivity in avian proteins allowing for migration[1]. The two main biological systems for optically-driven magnetosensing are cryptochrome (CRY) and light-oxygen-voltage (LOV) proteins[2,3], where each can be broadly summarised by 4 steps: photoactivation,...
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Dr Simon Haine (Australian National University)04/12/2025, 11:10Ultracold Atoms and Quantum TechnologyFocus session invited talk
Atom interferometry has emerged as a powerful tool for precision inertial sensing, with applications ranging from gravimetry to navigation and geophysics. In this talk, I will explore recent advances that push the boundaries of sensitivity and robustness in atom interferometers, with a particular focus on techniques relevant for real-world deployment.
A central theme will be the use of...
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Vincent de Rover (University of Wollongong)04/12/2025, 11:10
Aims:
Recently the first first-in-human minibeam radiation therapy (MBRT) treatments with an orthovoltage x-ray unit at Mayo Clinic, Rochester, Minnesota was presented. We present the development of a GEANT4-based radiation transport model to simulate the minibeam radiation field produced using a clinical orthovoltage machine.Materials and Methods:
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The full clinical orthovoltage machine... -
Shuyi Shi04/12/2025, 11:10
Single-photon emitters (SPEs) are key components for quantum technologies, particularly in sensing and secure communication. In solids, SPEs often originate from point defects that introduce discrete states within the band gap. Electron–phonon coupling can strongly affect these defect levels by renormalizing their energies, thereby shifting the emitted photon energy. Common theoretical...
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Xingshuo Huang (The Australian National University)04/12/2025, 11:25
Germanium-tin (GeSn) alloys have recently emerged as promising materials for infrared photodetectors due to their tunable bandgap, which ranges from the short-wavelength infrared (<3 μm) to the mid-wavelength infrared (~3–10 μm). Ge-GeSn superlattices offer further advantages, including enhanced carrier confinement and improved absorption efficiency arising from quantum confinement effects....
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Dr Amy Geddes (The University of Queensland)04/12/2025, 11:25
Although students are expected to begin fourth-year atomic physics with a strong understanding of quantum mechanics (QM) developed in second and third year, it has been identified that students often struggle to link theoretical QM concepts with real-world atomic phenomena and applications.
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We have developed a series of computational workbooks that are self-directed, interactive and have been... -
Kannan Suresh Kumar (Australian National University)04/12/2025, 11:25
One long-standing puzzle in modern physics is the discrepancy between the most accurate proton charge radius measurements from muonic hydrogen spectroscopy and electronic hydrogen spectroscopy [1]. Despite theoretical improvements over the last decade, the mismatch remains [2], potentially hinting at physics beyond the Standard Model [3].
Helium, the next simplest atom after hydrogen,...
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Joel Poder (St. George Hospital Cancer Care entre)04/12/2025, 11:40
Hospital based medical physicists are uniquely positioned at the interface between fundamental research and direct patient benefit. Translating innovations from academia and industry into the hospital setting, however, presents both opportunities and challenges. Translational pathways typically involve the progression of prototypes through feasibility testing, clinical trials, and eventual...
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Daniel Schumayer (The University of Sydney)04/12/2025, 11:40
Teaching physics is rapidly shifting from rote memorization to emphasizing conceptual understanding, constructing knowledge through lecture demonstrations and experiments, and applying that knowledge in hands-on situations. The desire for such change has been long expressed by major physics organizations, including the American Institute of Physics, the Australian Institute of Physics, and the...
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Sean Hodgman (The Australian National University)04/12/2025, 11:40Ultracold Atoms and Quantum TechnologyInvited/Keynote talk
Nonlocal entanglement between pair-correlated particles is a highly counter-intuitive aspect of quantum mechanics. While the rigorous Bell’s inequality framework has enabled the demonstration of such entanglement in photons and atomic internal states, no experiment has yet involved motional states of massive particles. Here we report the experimental observation of Bell correlations in...
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William O C Davis (Macquarie University)04/12/2025, 11:40
Low-loss high-speed switches are an integral component of future photonic quantum technologies, with applications in state generation, multiplexing, and the implementation of quantum gates. Phase modulation is one method of achieving this switching; however, existing optical phase modulators, such as Pockels cells and waveguided lithium niobate, offer either high bandwidth or low loss—not...
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Rodney Vickers (University of Wollongong)04/12/2025, 11:40
While the optical properties of calcite are well known in the visible region, that same cannot be said of the terahertz region. Campbell et al. [1] have reported attenuated total reflectance (ATR) spectra. Sakai et al. [2] used pulsed terahertz radiation ATR. ATR has the attraction of experimental simplicity; however, the results are not always easy to interpret, nor is information related...
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Isabella Pham04/12/2025, 11:55
Axions are a promising dark matter candidate as well as a compelling solution to the strong charge-parity problem. Axion dark matter can be modelled as a background, classical field, whose interactions with Standard Model particles and forces give rise to observable effects. Although there are many experiments that search for these axion-induced experimental observables, given the mystery of...
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Siobhan Tobin (ANSTO)04/12/2025, 11:55
The Wombat instrument is one of a few neutron diffraction instruments in the world to have a large position sensitive (effective area) detector, which has greatly supported the wide range of science applications and outcomes the instrument is able to undertake [1]. To date there have been limited single crystal studies undertaken on the Wombat instrument due to peak integration software being...
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Michael Wheatland04/12/2025, 11:55
Mechanics problems (including advanced problems in rigid body dynamics) provide a basis for research projects which are attractive to high-achieving undergraduate students. These projects require students to draw on their knowledge from multiple areas, including mathematics, programming, and physics, and also require visualisation of the complex motion of extended objects. This integrated...
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Jack Easton (University of Queensland)04/12/2025, 12:10
The measurement of atomic parity violation in Cs currently provides the most precise test of electroweak theory at low energies. High precision calculations of the Stark-induced 6S-7S vector transition polarisability are required to interpret this measurement and determine the level of agreement with the Standard Model prediction. However, there is currently a 2.8σ discrepancy between values...
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Dr Dehong Yu (Australian Nuclear Science and Technology Organisation)04/12/2025, 12:10
Refrigeration is of vital importance for modern society—for example, for food storage and air conditioning—and 25 to 30 per cent of the world’s electricity is consumed for refrigeration. Current refrigeration technology, mostly involving the conventional vapour compression cycle, is of growing environmental concern because of large amount of greenhouse gases released into atmosphere every...
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Prof. Elisabeth Schueltke (Universitätsmedizin Rostock)04/12/2025, 12:10
Of the fundamental components of cancer therapy, radiotherapy is by far the one causing the least ecological foot print, compared to surgery and systemic therapy (chemotherapy, immunotherapy). While radiotherapy is mainly a local therapeutic approach, it can help to significantly reduce the requirement for extensive surgery as well as for the need of systemic therapy. From clinical...
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Maria Parappilly (Flinders University)04/12/2025, 12:10
Australia faces a significant shortage of qualified high school physics teachers, with over 1 in 5 reportedly teaching “out-of-field”. This scarcity negatively impacts student choices and success, contributing to a broader skilled worker shortage. There is also substantial demand for individuals with physics skills to support the Australian Government’s investment in nuclear technology and to...
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Jacinda Ginges04/12/2025, 12:25
Little is known about the distribution of magnetization inside the nucleus. While nuclear charge distributions may be well understood through techniques like electron scattering, muonic atom spectroscopy, and precision measurements of atomic isotope shifts, nuclear magnetization distributions are much harder to probe.
We highlight and exploit a property of heavy muonic atoms that enables...
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04/12/2025, 12:25
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Dr Amy Geddes (University of Queensland)04/12/2025, 13:40
Isotope shift spectroscopy has repeatedly demonstrated its efficacy in high-precision tests of fundamental physics and the Standard Model. Its ability to benchmark atomic models and determine sizes of atomic nuclei has been well established, and in recent years, it has also been identified as one method for searching for potential dark matter particles.
The isotopic shift in transition...
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Lois Holloway (South Western Sydney Local Health District, Ingham Institute and University of New South Wales)04/12/2025, 13:40
Medical Imaging data provides a wealth of information to the health care pathway including diagnosis, understanding disease extent, prognosis, outcome and follow-up. Medical image data can capture anatomical, biological and physiological information through computed tomography, positron emission tomography, magnetic resonance imaging and other approaches. To use this data effectively for an...
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Dr Teague Tomesh (Infleqtion)04/12/2025, 13:40Quantum Science and TechnologyContributed Oral
Quantum technologies are rapidly emerging as powerful tools for addressing complex challenges in biology. In this talk, I will share a cross-section of Infleqtion’s research at the intersection of both quantum computing and quantum sensing with applications in biomedicine. On the computing side, I will describe our ongoing work within the Wellcome Leap Q4Bio program, where we have developed a...
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Meng Li (QUT)04/12/2025, 13:40Emerging Materials and Physics for Energy ConversionFocus session invited talk
Traditional thermoelectric research faces persistent challenges arising from inherent trade-offs among the Seebeck coefficient, electrical conductivity, and thermal conductivity. Despite extensive efforts through doping, alloying, and microstructural modifications, the figure-of-merit (ZT) of modified single-phase thermoelectric materials remains well below the theoretical Mahan–Sofo limit of...
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Jackson Lucas (Australian Research Council Centre of Excellence in Quantum Biotechnology (QUBIC), The University of Queensland)04/12/2025, 13:55Quantum Science and TechnologyContributed Oral
Despite significant advances in molecular biology and microscopy techniques, many questions remain regarding the interactions between a single cell and its environment. In particular, understanding protein-membrane binding is vital for optimising the delivery of vaccines and medicines. By studying these transmembrane behaviours, we can improve drug delivery and increase the specificity of cell...
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Mr Liam Wymer (Research School of Physics, Australian National University)04/12/2025, 13:55
We have adapted one of the ANU positron beamlines, which use a Surko buffer gas trap and a strong magnetic field, to enable direct measurements of reaction products from atomic collision experiments. An effusive gas jet was added to the beamline, which allowed us to cross a helium beam with the high-resolution, pulsed positron beam. Long-lived (metastable) neutral excited helium atoms formed...
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Vladimir Dzuba (University of New South Wales)04/12/2025, 14:10
Fundamental constants—such as the fine-structure constant α, the strong-interaction scale, and particle masses—may vary in an expanding Universe. A spatial variation could help explain apparent fine tuning: we inhabit a region where the values permit life. Hints from quasar absorption spectra suggest a gradient in α, but decisive confirmation requires laboratory tests. Atomic clocks provide...
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Dr Nick Hardcastle (Peter MacCallum Cancer Care Centre)04/12/2025, 14:10
Radiation oncology is a cornerstone of modern cancer care, with approximately 40% of patients receiving radiotherapy (RT) during their cancer journey. Central to its success is achieving an optimal therapeutic ratio: maximising tumour control while minimising side effects. Radiation oncology is a highly technical field, where new algorithm and hardware advances drive improvements in patient...
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Prof. Jenny Pringle (Deakin University)04/12/2025, 14:10Emerging Materials and Physics for Energy ConversionFocus session invited talk
Cooling technologies are essential for health and comfort worldwide, yet conventional vapour-compression systems are a major contributor to greenhouse gas emissions. These emissions arise from both the low energy efficiency of the cycle and the leakage of hydrofluorocarbon (HFC) refrigerants, which have very high global warming potentials. As demand for air-conditioning accelerates in a...
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Ms Bianca Rae Fabricante04/12/2025, 14:10Quantum Science and TechnologyContributed Oral
Exciton-polaritons (polaritons), hybrid quasiparticles formed by excitons coupled to microcavity photons, are known to undergo Bose–Einstein condensation at elevated temperatures. One of the defining features of polariton condensation is the formation of long-range order both in space and time, as demonstrated in continuous wave measurements, which is non-trivial due to the inherently...
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Samuel McNeil (University of Sydney)04/12/2025, 14:25Quantum Science and TechnologyContributed Oral
Levitated optomechanics, the trapping and control of microscopic and mesoscopic particles in vacuum, has seen recent and widespread success including record torque sensitivity [1], and yoctonewton force sensing [2]. A levitated nanoparticle is ideal for a ‘macroscopic’ quantum platform due to its intrinsic mass and low coupling to the environment. This presents an exciting avenue for...
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Matt Best (Research School of Physics, Australian National University)04/12/2025, 14:25
The positron is the antimatter counterpart of the electron. They can annihilate directly, producing gamma rays (e.g., two 511 keV) or form a bound state known as positronium (Ps). The bound state has two forms: a singlet or para-Ps (125ps lifetime), and a triplet state or ortho-Ps (142ns lifetime). These states decay into a number of gamma rays (even or odd, respectively),which can be measured...
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Nihar Makadia (The University of Sydney)04/12/2025, 14:40Quantum Science and TechnologyContributed Oral
Coherently manipulated large ion crystals in a Penning trap are a promising candidate for near-term quantum simulation of complex many-body phenomena [1]. At the University of Sydney, we have developed a Penning trap to perform such experiments with crystals containing hundreds of beryllium ions [2]. The system has recently demonstrated efficient site-resolved imaging, enabling single-shot...
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Osama Terra (Macquarie University)04/12/2025, 14:40
Lasers with ultra-narrow linewidths, stable single-frequency operation, exceptional beam quality, and high power in the visible spectrum are indispensable for applications such as artificial guide star generation and optical lattices in next-generation clocks. Diamond Raman Lasers (DRLs) represent a compelling solution, as they enable access to spectral regions that are otherwise challenging...
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Sherryn MacLeod (University of Wollongong)04/12/2025, 14:40
Beam‑shaping assembly (BSA) design using Monte Carlo techniques for accelerator‑based boron neutron capture therapy (BNCT) requires accurate modelling of light‑ion reactions on thin or thick targets, which define the neutron source term for subsequent beam shaping. Geant4 11.1.3, PHITS 3.33, FLUKA 4‑4.0 and MCNP 6.3 have been benchmarked for thick‑target neutron yield and spectra from...
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Kyle Portwin (University of Wollongong)04/12/2025, 14:40Emerging Materials and Physics for Energy ConversionFocus session invited talk
A large fraction of global primary energy is dissipated as waste heat, motivating the search for materials that can directly convert heat to electricity via the Seebeck effect. Tin selenide (SnSe) is a leading thermoelectric candidate due to its ultralow lattice thermal conductivity and favourable electronic structure. Beyond conventional optimisation strategies such as doping or alloying, the...
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Anthony O'Rourke (University of Technology Sydney)04/12/2025, 14:55Quantum Science and TechnologyContributed Oral
In the not-too-distant past, reliable transfer of data was largely done with small portable memories. This method is ideal for quantum communication in which the required resource for protocols such as quantum key distribution and quantum teleportation is distributed Bell pairs, as these can be distributed ahead of time using quantum memories [1410.3224].
Quantum low-density parity-check...
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Ankit Papneja (Australian National University)04/12/2025, 14:55
We present a novel demonstration of an optical memory-based time–frequency Fourier transform (TFFT) using an ensemble of cold 87Rb atoms. Our approach combines two widely studied light–matter interaction protocols, Gradient Echo Memory (GEM) for storage and Electromagnetically Induced Transparency (EIT) for recall, to perform a Fourier transform directly within the atomic medium. Optical...
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Susanna Guatelli04/12/2025, 14:55
Modelling the early DNA damage induced by radiation is critical for understanding its biological impact. Radiation traversing a cell induces DNA damage through both physical interactions (direct damage) and chemical interactions of radiochemical species (indirect damage) with the DNA strand. Through the combination of DNA geometry models, physics models and chemical tracking, the early DNA...
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Fong Yang (No Affiliation)04/12/2025, 15:10
Matter consists of particles and waves. Every day we interact with particles while essentially disregarding waves. Quantum mechanics mathematically describe matter from the waves’ perspective while disregarding particles. This description does not reflect our everyday experience with matter.
The double slit experiment shows that electrons inherently have wave properties. Quantum...
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Andoni Skoufris (The University of Queensland)04/12/2025, 15:10
Despite the enormous success of theoretical atomic physics over the past 100 years, the majority of atomic structure calculations treat electron-electron interactions completely non-relativistically through the Coulomb interaction. Although this captures the leading order behaviour of the interactions and is suitable for approximately non-relativistic systems, for heavy or highly-charged ions...
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Abhinash Roy (Macquarie University)04/12/2025, 15:10
Randomized benchmarking (RB) is the most widely used characterisation technique for assessing gate quality via a single decay parameter, but standard protocols implicitly assume temporally uncorrelated (Markovian) noise. In realistic devices, environmental fluctuations induce correlations in time (non-Markovianity), motivating extensions of RB beyond the Markovian regime. Recently, some...
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Gagandeep Singh (Punjab University)04/12/2025, 15:10
Quantum gravity seeks to unify quantum mechanics and general relativity into a coherent framework, addressing fundamental questions about space-time at the Planck scale. This pursuit has inspired diverse theoretical approaches, including string theory, loop quantum gravity, causal dynamical triangulations, and emergent space-time models, each predicting distinct phenomenological signatures. On...
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Vadim Rodimin (Technology Innovation Institute)04/12/2025, 15:10
Transmission of entangled photons through optical fiber underpins quantum key distribution (QKD), quantum computing, and the quantum internet. However, polarization mode dispersion (PMD) remains a key obstacle to distributing polarization-entangled photons over deployed fiber, especially for broadband sources where wavelength-dependent polarization rotation accumulates into measurement...
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316. Collectively-pumped superradiant laser with coherence scaling beyond the standard quantum limitori somech (PhD student)04/12/2025, 15:10
For more than half a century, the standard quantum limit (SQL) was thought to limit the laser coherence $\mathfrak{C}$ –– the number of photons emitted from the laser into the beam in one coherence time –– to a scaling $\Theta(\mu^2)$, where $\mu$ is the mean number of optical-frequency excitations stored inside the laser. However, recently it has been shown [Baker et al., Nat. Phys. 17, 179...
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Valeriya Karmazina04/12/2025, 15:10
Coplanar waveguides (CPWs) are used ubiquitously for microwave signal transmission in superconducting quantum processors, and air bridges are crucial to maintain signal hygiene and enable high-density, space-efficient routing. While their use in quantum processors to maintain ground connections across complex circuit topologies is well established empirically (Janzen et al., 2022, and related...
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Giorge Gemisis (University of Technology Sydney, School of Mathematical and Physical Sciences)04/12/2025, 15:10
Superconducting electronics are central to emerging, high-impact quantum technologies. Operating in the microwave regime, these systems require cryogenic environments and electromagnetic shielding to suppress unwanted electromagnetic interactions, blackbody radiation and quasiparticle interactions that can degrade coherence (Krinner et.al, 2019) or introduce experimental interference....
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Alison Goldingay (UNSW)04/12/2025, 15:10
The detection of infrared photons is critical to the successful readout of single photon states of spin qubit platforms such as embedded ions. Superconducting nanowire single photon detectors (SNSPDs), based on the simple principle of the generation of a hotspot in a superconducting nanowire upon photon absorption leading to a resistance spike, provide an excellent platform for fast and...
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Aaquib Shamim (University of New South Wales)04/12/2025, 15:10
Electrically Driven Hole Spin Resonance Detected with Charge Sensor in a Planar Si CMOS Structure
A. Shamim {1}, S. D. Liles {1}, J. Hillier {1}, I.Vorreiter{1}, F. E. Hudson {2}{3}, W. H. Lim {2}{3}, A. S. Dzurak {2}{3}, A. R. Hamilton {1}.
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{1} - School of Physics, University of New South Wales, Sydney NSW 2052, Australia.
{2} - School of Electrical Engineering and Telecommunications,... -
Nicholas Christopher (University of Queensland, Brisbane)04/12/2025, 15:10
The transmon qubit, in which a qubit is encoded in the anharmonic spectrum of a superconducting circuit, is a leading hardware platform for building utility-scale quantum computers. Thanh Le, Cole and Stace propose an alternative encoding for transmon qubits and demonstrate that a $4\pi$-periodic inductive element can be used to access states which are forbidden in the traditional encoding....
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Anouk Jurewicz (TU/e)04/12/2025, 15:10
Hex-SiGe is a promising material for the photonic integration of data communication, as its direct bandgap allows for silicon-based optoelectronic interconnects. However, hex-SiGe is synthesised in core-shell nanowire structures that are not suitable for future scalability and probing of fundamental properties is difficult due to their small size. To overcome these challenges, it is proposed...
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Justin Brown (University of New South Wales)04/12/2025, 15:10
Optically active spins in solids are promising for many applications in quantum information science, such as entanglement distribution nodes in quantum networking, single photon sources for linear optical quantum computing, and as a platform for cluster state quantum computing. Their optical connectivity could also be leveraged to implement low-density parity check (LDPC) error correction...
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Tuyen Nguyen (University of Technology Sydney)04/12/2025, 15:10
Multimodal learning, which integrates heterogeneous data modalities including text, vision, and sensor signals, has made remarkable progress. Yet, effectively capturing complex relationships across modalities remains a challenge, especially in settings with numerous input streams. Existing methods often restrict these interactions to remain computationally tractable: tensor-based models...
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Usama Ahsan (UNSW)04/12/2025, 15:10
Performing experiments on qubit devices require the implementation of quantum gates, which are prone to errors. It could be stochastic errors introduced by the noisy environment or unitary errors due to miscalibration or drifts in the system, resulting in sub-optimal fidelities. Therefore, we required a formalism to understand the unitary errors as they appear and how the quantum gates are...
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Christine Little (James Cook University)04/12/2025, 15:10
Understanding interaction-driven phenomena in nanoscale quantum systems far from equilibrium is essential for describing how spatially separated quantum systems entangle and exchange energy, momentum, and information. In this work, we investigate Coulomb drag and nonequilibrium dispersion forces between two interacting quantum dots, each connected in parallel to its own macroscopic leads....
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Bipin Kumar (Macquarie University)04/12/2025, 15:10
Raman lasers make use of inelastic, third-order nonlinear light-matter interaction and inherent phase matching to shift optical frequencies and enhance beam quality by transferring pump energy into the cavity’s fundamental mode. These processes have a linewidth-narrowing effect, expected to reduce laser linewidth by up to eight orders of magnitude, outperforming Brillouin lasers, with reported...
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Harshna Vithya Saahar Gounder (University of Technology ydney)04/12/2025, 15:10
Hyperentanglement, a sophisticated form of quantum entanglement across multiple degrees of freedom (DOFs), holds immense potential for revolutionizing quantum technologies in communication, sensing, and computing. This work presents a computational approach to generate hyperentanglement using waveguides, a method shown to be more efficient than traditional techniques and capable of producing a...
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Subhashish Barik (The University of New South Wales)04/12/2025, 15:10
Travelling-wave parametric amplifiers (TWPAs) are critical components for improving the readout fidelity of superconducting qubit systems [1]. While Josephson junction-based TWPAs offer excellent broadband noise performance and are widely adopted in quantum computing architectures, their limited dynamic range, fabrication complexity, and sensitivity to magnetic fields and elevated temperatures...
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Nicholas Jordinson (University of Queensland)04/12/2025, 15:10
Turbulence in two-dimensional (2D) fluids often leads to the formation of long-lived, large-scale vortex structures. In 2D quantum fluids, such as Bose–Einstein condensates, these structures manifest as clusters of singly quantised vortices [1,2]. Simula et al. showed via Gross–Pitaevskii simulations that vortex clustering can spontaneously emerge from an initially random distribution of...
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Joshua Machacek (Research School of Physics, Australian National University), Liam Wymer (Research School of Physics, Australian National University)04/12/2025, 15:10
A nuclear wasteform serves to contain radionuclides and enable safe disposal of nuclear waste over long timeframes. In ceramic wasteforms, radionuclides are locked into specific atomic sites within the crystal structure through strong inorganic bonds, effectively preventing their release. Fluoride-pyrochlores are being explored for the immobilisation of actinides from Generation IV molten salt...
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Gabriel Waite (University of Technology Sydney)04/12/2025, 15:10
This work characterises families of guiding states for the Guided Local Hamiltonian problem, revealing new connections between physical constraints and computational complexity.
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Focusing on states motivated by Quantum Chemistry and Hamiltonian Complexity, we extend prior BQP-hardness results beyond semi-classical subset states by demonstrating that broader state families preserve... -
Tavjot Kaur Matharu (University of Wollongong)04/12/2025, 15:10
With clinical breast imaging trials soon taking place at the Australian Synchrotron using phase contrast CT, accurately characterising the radiation dose, specifically the Mean Glandular Dose (MGD), is essential for ensuring radiation safety and optimising beam parameters. A GEANT4 simulation study was performed to investigate the effects of beam energies, 32 keV and 35 keV, on anthropomorphic...
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Kerstin Beer (Macquarie University)04/12/2025, 15:10
Quantum machine learning (QML) has the potential to outperform classical methods for certain structured data problems. For datasets with specific group structures, quantum kernels have been shown to learn more efficiently than classical approaches. These kernels use unitary representations of groups to construct feature maps that are covariant under group actions, enabling the algorithm to...
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Samuel Elman (University of Technology Sydney)04/12/2025, 15:10
Corrosion is a pervasive issue that impacts the structural integrity and performance of materials across various industries, imposing a significant economic impact globally. In fields like aerospace and defense, developing corrosion-resistant materials is critical, but progress is often hindered by the complexities of material-environment interactions. While computational methods have advanced...
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Sheil Sequeira (ANU)04/12/2025, 15:10
A Bose-Einstein condensate (BEC) is an example of a macroscopic quantum state where many particles occupy the same state, making them useful for fundamental tests of quantum physics and quantum applications such as computing and sensing. Non-equilibrium BECs of exciton-polaritons, quasiparticles in semiconductors arising from the strong coupling between excitons (bound electron-hole pairs) and...
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Alexander Solntsev (UTS)04/12/2025, 15:10
Non-Gaussian optical resources are central to scalable quantum networks, precision sensing and photonic computing. A direct route is generating correlated photon triplets, yet optical third-order spontaneous parametric down-conversion (TOSPDC) is difficult because χ(3) nonlinearities are weak and dispersion and phase-matching are complex. We introduce a general modelling framework that...
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Ella Lengerer (Swinburne University of Technology)04/12/2025, 15:10
The advent of Radio-Pharmaceutical Therapy (RPT) marks an impactful advancement in radiation oncology, offering the potential to treat tumours with cellular precision while minimising adverse effects. Evaluating the efficacy of this treatment relies on accurate dosimetry, which is traditionally informed by absorbed dose, but absorbed dose alone overlooks the spatial complexity of...
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Maya Sharp (Australian National University)04/12/2025, 15:10
Amorphous Monolayer Carbon (AMC), a disordered form of graphene first synthesised in 2020, displays high flexibility but has low mechanical strength, restricting potential application in areas such as flexible electronics.
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Existing descriptions of 2D amorphous materials generally fall between assigning materials to Zachariasen continuous random networks, as frequently ascribed to bulk... -
Shaobo Zhang (The University of Melbourne)04/12/2025, 15:10
Band crossings in electronic band structures play an important role in determining the electronic, topological, and transport properties in solid-state systems, making them central to both condensed matter physics and materials science. The emergence of noisy intermediate-scale quantum (NISQ) processors has sparked great interest in developing quantum algorithms to compute band structure...
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William O C Davis (Macquarie University)04/12/2025, 15:10
Raman lasers are a promising platform for narrow linewidth single-longitudinal mode lasers, and their Raman shifts provide access to wavelength ranges not easily reached with commercial lasers. Moreover, the Raman process provides intrinsic line narrowing, recently shown to greatly reduce linewidth and suppress high-frequency noise relative to the pump. Diamond, in particular, has the highest...
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Abdulaziz Almutairi (1Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, 2Flinders Microscopy and Microanalysis, College of Science and Engineering, Flinders University, Adelaide SA 5001, Australia, and 3Department of Physics, Faculty of Science and Arts (Rafha), Northern Border University, 2007, Aran, Saudi Arabia.)04/12/2025, 16:10Emerging Materials and Physics for Energy ConversionFocus session invited talk
Photocatalytic water splitting is a promising technology for using solar energy to produce directly hydrogen (green hydrogen (GH2)), GH2 is considered to as environmentally friendly and renewable energy based fuel. However, only a few semiconductor materials have been developed as efficient photocatalyst, amongst them photocatalysts based on Al:SrTiO3.(1) A typical photocatalyst consists of...
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Syed Jawad Ali Shah (University Of Wollongong)04/12/2025, 16:10
Introduction
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Accurate dosimetry in ophthalmic plaque brachytherapy is essential due to steep dose gradients and the proximity of critical ocular structures. Current clinical practice relies on manufacturer-certified data with limited independent verification. This study reports on the development of a novel system for rapid pre-insertion validation of Ru-106 and I-125 plaques using... -
Victor Flambaum (University of New South Wales)04/12/2025, 16:10
Nuclear Clock and the Search for New Physics
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The isomeric transition in 229Th - recently laser-excited by multiple groups [1] - opens a path to a nuclear clock with accuracy competitive with, and potentially exceeding, the best optical atomic clocks. Because the nucleus is well shielded from environmental perturbations, systematic shifts can be intrinsically small; however, the surrounding... -
Nicholas Funai (RMIT University)04/12/2025, 16:10Quantum Science and TechnologyContributed Oral
QFT models involving detectors are usually modelled perturbatively out of necessity, however, there are certain situations when non-perturbative methods can be used. When the detector is a finite dimensional qudit, non-perturbative modelling is possible if the detector interacts suddenly and very quickly (δ-switching) or if the detector is degenerate (zero energy gap). When the detector...
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Dr Catherine Pot (Victoria University of Wellington)04/12/2025, 16:25Quantum Science and TechnologyContributed Oral
The rare-earth nitrides are a series of ferromagnetic semiconductors with suitable properties for cryogenic memory applications, including quantum and superconducting computing systems. When grown as thin films, the magnetic and transport properties of rare-earth nitrides can be tuned independently by varying the growth conditions and rare-earth nitride selection [1]. In particular, solid...
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Christopher White (University of Wollongong)04/12/2025, 16:25
The Elekta Unity is an MR-LINAC that integrates a 7 MV linear accelerator with a 1.5 T MRI in order to provide adaptive online radiotherapy. Using Geant4 version 11.1 and the EMStandard Option 4 Physics Constructor a highly accurate simulation of the Elekta Unity MR-LINAC was developed to produce patient specific dose maps. These dose maps are utilised for the training of a robust dose...
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Khalid Alhamad (Centre for Medical Radiation Physics, University of Wollongong)04/12/2025, 16:40
Precise source localisation is vital for safe HDR brachytherapy. This study examines a fibre-optic dosimeter for real-time tracking of a ¹⁹²Ir source, using a new calibration approach that incorporates fluorescence and Cherenkov contributions alongside scintillation signals. Unlike conventional stem-effect correction methods, which rely on hardware modifications or spectral separation, this...
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Narise Williams (The University of Physics)04/12/2025, 16:40
The mystery of dark matter (DM) is a long-standing issue in physics, with numerous dedicated experiments returning no confirmed detection. As many direct detection experiments rely on catching a signal of nuclear recoil, these types of experiments are not applicable to many DM models.
Instead, we can utilise the precision that atomic physics allows to search for potential interactions...
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123. Moments-based ground-state energy estimation for pre-fault tolerant quantum hardware and beyondMichael Jones (University of Melbourne)04/12/2025, 16:40Quantum Science and TechnologyContributed Oral
Ground-state energy estimation of chemical systems is perhaps one of the most promising applications of emerging quantum processors. However, the presence of noise makes near-term implementation of quantum algorithms challenging, while fault-tolerance at the scale required for useful computation remains a medium-term prospect. We present Hamiltonian moments-based approaches to ground-state...
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Caleb Stamper (Monash University)04/12/2025, 16:40Emerging Materials and Physics for Energy ConversionFocus session invited talk
Atomic vibrations on the terahertz (THz) scale play a central role in determining a material’s optical, electronic, thermal, and mechanical properties. In particular, the coupling between vibrational dynamics and thermal transport or phase transitions offers opportunities to design materials for efficient energy conversion and storage.
This presentation will highlight recent work...
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April Weyling (The University of Queensland)04/12/2025, 16:55
Non-equilibrium systems underpin a range of phenomena and can often evolve to form emergent structures. Understanding these fundamental processes advances our grasp of complex physical behaviour, and remains a central challenge of physics. One method to drive a system out of equilibrium is via a quench, such as dropping temperature or applying a magnetic field. If this instantaneous shift is...
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James Cayley04/12/2025, 16:55
Ultra-high dose-rate, very high-energy electrons (VHEE, electrons with energy greater than 50 MeV) are of increasing interest to the field of radiotherapy, due to their ability to penetrate deeply into tissue and reach tumours that are out of reach to clinical electrons of lower energies. Linacs capable of reaching these energies are also capable of exceedingly high dose-rates, many orders of...
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Kaur Kristjuhan04/12/2025, 16:55Quantum Science and TechnologyContributed Oral
Estimating the ground state energy of a physical system is an important task in quantum algorithms. If the ground state can be prepared on a quantum computer, then its energy can be estimated using the quantum phase estimation algorithm, which involves applying multiples of a unitary to the ground state, controlled on an auxiliary state prepared on a control register. Textbook descriptions of...
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Adam Marsic04/12/2025, 17:10
Ocular melanoma is the most common intraocular malignancy in adults and is potentially life-threatening if left untreated. A common alternative to enucleation (removal of the eye) is eye plaque brachytherapy, where small Iodine-125 seeds are arranged on the surface of a circular ophthalmic plaque. Currently, there is no rapid method to measure the activity of individual seeds, preventing...
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Gunther Andersson04/12/2025, 17:10Emerging Materials and Physics for Energy ConversionFocus session invited talk
Photocatalytic water splitting allows producing green hydrogen without the need to be connected to the electric grid. Photocatalysts absorb light and generate electron hole pairs. Provided that the energy levels of the valence band and conduction band are positioned below and above the energy levels required for the oxygen and hydrogen evolution reaction, respectively, the absorbed light...
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Jayden Hasted (The University of Queensland)04/12/2025, 17:10
Atomic hyperfine structure provides a window into the structure of nuclei. High-precision atomic theory is essential for extracting model-independent nuclear observables from hyperfine measurements – permitting the interrogation of nuclear models. Such studies also allow the testing of atomic structure theory in the nuclear vicinity, which is needed for low-energy searches for new physics...
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Alexander Dellios (Swinburne University of Technology)04/12/2025, 17:10Quantum Science and TechnologyContributed Oral
The development of linear optical quantum computers (QCs) has accelerated in recent years, in part, due to experimental implementations of large-scale Gaussian boson sampling (GBS) devices. These QCs send squeezed state photons into a linear photonic network and output a series of photon count patterns. This seemingly simple task is #P-hard because, for implementations utilizing photon-number...
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Soumya Sarkar (University of Technical Sydney)04/12/2025, 17:25Quantum Science and TechnologyContributed Oral
Open quantum systems evolving under time-dependent Lindbladian simulations dynamics arise in diverse contexts, yet efficient algorithms for large-scale, time-dependent Lindbladian dynamics remain underexplored. In the fault-tolerant setting, the time required to propagate a state by a complex, time-dependent Hamiltonian is prohibitive. We circumvent this issue by introducing a...
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Kristie Elaine Moore04/12/2025, 17:25
Heavy-ion therapy (HIT) is a growing cancer treatment modality due to its dose sparing and high biological effectiveness. However, a major challenge in heavy-ion therapy is nuclear fragmentation, where primary ions break into smaller particles, resulting in complex secondary radiation fields. Monte Carlo simulations are commonly used to study the secondary radiation field, such as to estimate...
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Ned Goodman (Swinburne University)04/12/2025, 17:40Quantum Science and TechnologyContributed Oral
Gaussian Boson Samplers (GBS) are non-universal optical quantum computers introduced to demonstrate quantum advantage without requiring full error-correction by efficiently sampling from a classically-hard distribution. These devices are relatively simple: just squeezed states fed through a random, precise array of linear optics. Recently, the first large-scale GBS devices were created: the...
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Malin Kügele (Universitätsmedizin Rostock)04/12/2025, 17:40
Approximately half of all cancer patients receive radiotherapy, with external beam radiotherapy being a cornerstone of treatment. The objective is to deliver radiation with high precision to achieve tumor control while minimizing exposure of surrounding healthy tissue. Despite major technological advances, some radioresistant tumors remain incurable with conventional methods.
Microbeam...
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Anatoly Rozenfeld (University of Wollongong)05/12/2025, 08:30
Many discoveries in particle physics obtained on high luminosity colliders will be impossible without development of sophisticated semiconductor radiation detectors and Application Specific Integrated Circuits (ASICs) for their multichannel readout electronics. Among them different kind of strip detectors , pixelated detectors , detectors utilising 3D detector technology, Low Gain Avalanche...
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Sabrina Einecke (University of Adelaide)05/12/2025, 09:15Plenary
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Csaba Balazs (Monash University)05/12/2025, 10:40
Predicting the gravitational wave spectrum from symmetry breaking in the early universe during first-order phase transitions is key to understanding these symmetries. In this talk I present our recent advancements in developing a self-consistent framework for predicting such gravitational wave spectra. Our approach enhances existing calculations by providing a more comprehensive treatment of...
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Lucky Antonopoulos (RMIT)05/12/2025, 10:40Quantum Science and TechnologyContributed Oral
Discrete Wigner functions (DWFs) are central tools for visualising states, signifying nonclassicality, and supporting quantitative analysis in quantum information, yet many inequivalent constructions coexist for each Hilbert-space dimension. This fragmentation obscures which features are fundamental and which are artefacts of representation, and it impedes quantitative comparison of...
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David Cortie05/12/2025, 10:40
The discovery of the topological phases of matter sparked a renaissance in solid-state physics; however, broader applications to materials engineering are still in their infancy. Three-dimensional topological insulators offer a particularly simple new paradigm for developing unique functionality, which relies on the custom design of edges, surfaces, and interfaces.
The interplay between...
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Dominic Berry (Macquarie University)05/12/2025, 10:55Quantum Science and TechnologyContributed Oral
In quantum algorithms for simulation of quantum systems, a leading method is to use a product formula approach. The Hamiltonian is written as $H=T+V$, where the kinetic energy $T$ and potential energy $V$ are each calculated. Whereas $T$ can be calculated with complexity $n$ for a system with $n$ charges, calculating $V$ has complexity $n^2$ and is therefore a bottleneck. This complexity is...
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Dr Mansoor Ali Khan (Department of Electrical and Computer Engineering, National University of Singapore, 117575, Singapore)05/12/2025, 10:55
This talk introduces Quantum-AI Biophotonic Diagnostics for Point-of-Care Brain Tumor Screening, a next-generation framework that unites quantum computing, artificial intelligence, and nanoscale biophotonics to transform biomedical diagnostics. We present an integrated approach for early cancer detection that combines plasmonic biophotonic sensors with a quantum machine learning (QML)...
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Sharry Kapoor (The University of Sydney)05/12/2025, 11:10
Photomultiplier Tubes (PMTs) are central to the SABRE South experiment’s
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ability to detect rare, low-energy events, such as potential dark matter interac-
tions in ultra-pure NaI(Tl) crystals. To correctly interpret what the detector
sees, we need simulations that faithfully reproduce how our PMTs respond to
real signals. This work presents the comparison of the simulated PMT wave-
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Allegra Villar05/12/2025, 11:10
Proton therapy offers a more conformal dose distribution and higher linear energy transfer (LET) than conventional X-ray therapy, reducing dose to healthy tissue while enhancing tumour control. The relative biological effectiveness (RBE) quantifies radiation-induced tissue damage, and accurate RBE values are critical for treatment planning. Although an RBE of 1.1 is commonly assumed for proton...
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Nicole Luu (The University of Queensland, Australia)05/12/2025, 11:10
Dissipative solitons and localized dissipative structures are ubiquitous, from optomechanics [1] to fluid dynamics [2], and even cosmological defects [3]. Dissipative solitons exist in systems far from equilibrium, where energy is continuously being lost and resupplied, which introduces unique properties distinct from analogous systems at equilibrium. These dynamics have been studied...
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Matthew Davis05/12/2025, 11:10Quantum Science and TechnologyContributed Oral
When a conservative superfluid flows about an impenetrable cylindrical obstacle, vortex pairs will arise at the lateral edges of the obstacle and be shed into the background fluid flow when the critical velocity is exceeded. This phenomenon was characterised using the Gross-Pitaevskii equation in a theoretical study by Frisch et al. in 1992 [1]. In 2021 Stockdale et al. [2] looked at vortex...
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Matthew Roberts (University of Wollongong)05/12/2025, 11:25
A GEANT4 study into the concept for a simple, silicon-based, electronic fast neutron dosimeter for radiation protection purposes is presented. The circular shaped dosimeter utilised the fluence approach to neutron dosimetry to achieve a dose equivalent response. This approach involved using the neutron dose equivalent conversion coefficients to relate the dosimetry quantity fluence, to the...
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Simone Cunzolo (University of Wollongong)05/12/2025, 11:25
The established guiding principle for pulsed laser deposition (PLD) of high-quality YBa₂Cu₃O₇₋ₓ (YBCO) superconducting films suggests that the optimal target-to-substrate distance (TSD) lies near the visible tip of the laser-induced plume, with deviations from this point expected to degrade film properties. We modified our PLD system to allow precise external TSD adjustment over a 110 mm range...
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Raj Aryan Singh (Swinburne University of Technology)05/12/2025, 11:25
The QCD axion is a well-motivated hypothetical particle that offers simultaneous solutions to two major open questions in physics: the Strong CP problem and the nature of dark matter. If axions make up the dark matter halo of our galaxy, they may be detected through their resonant conversion into microwave photons in the presence of a strong magnetic field—a technique used in the axion...
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Sukhmandeep Singh Baath (The University of Queensland, QLD 4072, Australia)05/12/2025, 11:25Quantum Science and TechnologyContributed Oral
Converting disordered energy (heat) into ordered energy (work) is a fundamental objective in thermodynamics. In classical systems, disorder reflects practical limits on the knowledge of the microscopic state of a large system. Quantum systems, however, introduce an additional uncertainty arising from the fundamental structure of quantum mechanics [1]. Features such as coherence and...
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Bernd Frerker (Department of Radiooncology, Rostock University Medical Center)05/12/2025, 11:40
Radiation therapy is an important component of cancer treatment. Microbeam radiation therapy (MRT) is an experimental irradiation technique in which a synchrotron-generated X-ray beam is spatially fractionated into an array of quasi-parallel microbeams by a multislit collimator, leading to an inhomogeneous dose distribution in the target. In preclinical studies, this results in good tumor...
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Aritra Das (Australian National University)05/12/2025, 11:40Quantum Science and TechnologyContributed Oral
Quantum measurements, alongside quantum states and processes, form a cornerstone of quantum information processing. The precise characterisation of this triad—of states, processes, and measurements—underpins how well quantum devices used across computation, communication, and sensing platforms can be calibrated, benchmarked, and ultimately trusted. However, while state and process...
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Kayla Lord (School of Materials Science and Engineering, UNSW Sydney)05/12/2025, 11:40
Spintronic devices offer fast, non-volatile, and more energy-efficient computing and memory compared to conventional electronic approaches. Compositionally complex oxides (CCOs) are an emerging class of materials for spintronic applications due to their low cost, robust magnetic stability, and high tunability. We are investigating $\mathrm{La(Cr_{0.2}Mn_{0.2}Fe_{0.2}Co_{0.2}Ni_{0.2})O_{3}}$...
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Neil Lu (Australian National University)05/12/2025, 11:40
The post-merger stage of a binary black hole coalescence is known as "ringdown", when the remnant settles into a stable state through the emission of quasi-normal modes. Analyzing ringdown signals from gravitational-wave events offers a powerful test of general relativity in the strong-field regime and provides an independent consistency check on the full waveform analysis. In this talk, I...
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Igor Samsonov (UNSW)05/12/2025, 11:55
Light scalar and pseudoscalar fields—such as axion- and dilaton-like particles—are well-motivated dark-matter candidates. Their couplings to Standard-Model fields can induce tiny, stochastic modulations of atomic transition frequencies. A statistical framework for clock-based searches is developed, showing that higher-order statistical moments of the measured fluctuations (e.g., skewness,...
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David Bolst (University of Wollongong)05/12/2025, 11:55
Geant4 is an open-source Monte Carlo radiation physics simulation code, extensively used in medical physics, including verification of radiotherapy treatment planning systems, and the design of equipment for radiotherapy and nuclear medicine. It is also used in medical imaging for dosimetry, to improve detectors and reconstruction algorithms, and for radiation protection assessments. Geant4...
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Mr Samuel Cramer (University of Newcastle)05/12/2025, 11:55
Magnetic nanoparticles are used in biomedicine to treat and image cancer. This is because of their ability to generate heat within an alternating magnetic field and to track cells, respectively. Thus, it is important that their response to a magnetic field is simulated accurately to predict and understand their behaviour. However, simulations can be computationally expensive, so it is...
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Gebremedhin Kide Kinfe (ICTP, Univerdity of Trieste)05/12/2025, 12:10
BACKGROUND: X-ray Computed Tomography dose levels have been varying among modalities and scanning body regions due to the absence of an incessant routine follow-up. Thus, the study aimed to compute the dose index discrepancies in Ethiopia for the most recurring scan protocols (head, chest, abdomen, and pelvis).
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METHODS: Due to the rare existence of functional CT scanners in Ethiopia, a... -
David Walker (University of Canterbury)05/12/2025, 12:10
The ability to tailor functional properties of complex oxide thin films through epitaxial engineering has opened new avenues for oxide electronics and spintronics applications [1]. Lanthanum strontium manganite (La$_{1-x}$Sr$_{x}$MnO$_{3}$, LSMO) is a half-metallic perovskite oxide exhibiting a strong coupling among lattice strain, magnetism, and electronic transport [2]. Epitaxial strain...
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Sherryn MacLeod (University of Wollongong)05/12/2025, 12:25
Accelerator‑based neutron sources (ABNS) are reviving interest in neutron‑capture therapy (NCT) for cancer treatment. However, each facility needs a custom beam‑shaping assembly (BSA) to tailor the neutron spectrum, flux, spatial profile and gamma contamination. We have developed a modular, macro‑driven Geant4 framework that accelerates BSA prototyping and adaptation across facilities.
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Yuerui (Larry) LuPlenary
Two-dimensional (2D) van der Waals quantum materials have become important building blocks for future electronic, photonic, phononic and quantum devices. The highly enhanced Coulomb interactions in the atomically thin quantum 2D materials, arising from the reduced dimensionality and weak dielectric screening, allows the formation of tightly bound excitons, biexcitons and interlayer biexcitons....
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Anatoly Rosenfeld (Centre for Medical Radiation Physics, University of Wollongong)
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Xiaolin Wang (University of Wollongong)
Designing the Quantum Future: Novel Quantum Materials and Devices for Emerging Quantum Technologies
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Xiaolin Wang (University of Wollongong)
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Emma Paterson (University of Western Australia - QDM Labs)Quantum Science and TechnologyContributed Oral
Through left- or right-handed twisting, we investigate the impact of mirror-asymmetry (chirality) of the conducting boundary conditions of an equilaterial triangular cross section electromagnetic resonator. We observe the generation of eigenmodes with nonzero electromagnetic helicity as a result of the coupling of near degenerate $\mathrm{TE}_{11(p+1)}$ and $\mathrm{TM}_{11 p}$ modes. This can...
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Dr Peter Jonathan Cox (The University of Melbourne)
Sub-GeV mass dark matter has seen significant theoretical and experimental interest in recent years, with many proposed and upcoming direct detection experiments targeting this regime. In this talk, I will present new constraints on hadronically-interacting dark matter that arise from one-loop interactions with photons and electrons during big bang nucleosynthesis, as well as from rare meson...
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Dr James Zanotti (The University of Adelaide)Plenary
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Joshua Machacek (Research School of Physics, Australian National University)Plenary
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Anastasia BorschevskyPlenary
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Alina Donea (Monash University)Plenary
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Chennupati JagadishPlenary
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Mengting Zhao (Monash University)Focus session invited talk
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Mengting Zhao (Monash University)Focus session invited talk
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Mengting Zhao (Monash University)Focus session invited talk
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Mengting Zhao (Monash University)Focus session invited talk
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Matthew Berrington (University of New South Wales)Invited/Keynote talk
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Sam Scholten (School of Mathematics and Physics, The University of Queensland)Invited/Keynote talk
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Prof. Subhasish Mandal (Department of Physics and Astronomy, West Virginia University)From Edge States to Emergent Phases: Advances in Topological and Strongly Correlated MaterialsFocus session invited talk
High-temperature superconductivity and topological phase transition are among the most debated and intriguing phenomena in modern condensed matter physics. Their combined manifestation in either a single or hybrid material structure is of great interest for exhibiting Majorana zero modes. So far, the study of topological materials and the role of electron-phonon coupling in superconductivity...
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