26th Australian Institute of Physics Congress and the Australian and New Zealand Conference on Optics and Photonics

Session

Afternoon Tea and Poster Session 1

8 Dec 2026, 15:30

Belinda Hutchinson Building (The University of Sydney )

805. 1.8 GHz-Repetition-Rate Synchronously-Pumped Picosecond Diamond Raman Laser at 1240 nm

Xuezong Yang (Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences)

ANZOS | Photonics and Optics (ANZCOP)

Poster

High-Repetition-Rate Raman lasers are an effective way to expand the wavelength range of short laser pulses and fulfil the special requirements for applications such as metrology, sensing, fundamental research and industry. Here, a synchronously-pumped diamond Raman laser at 1240 nm was firstly demonstrated with repetition-rate up to 1.84 GHz and pulse duration of 41 ps. A symmetric diamond...

110. A Monte-Carlo model of time-correlated single-photon counting (TCSPC) Raman LiDAR for remote gas detection

Dr Jiaying Wang (Department of Physics and Astronomy, Curtin University, Perth 6102, Western Australia, Australia)

ANZOS | Photonics and Optics (ANZCOP)

Poster

Hydrogen is attracting increasing interest as a clean energy carrier, driving demand for sensitive remote sensing technologies for leak detection and monitoring. More broadly, remote gas sensing is important for environmental, industrial, and safety applications. Raman LiDAR provides a selective and spatially resolved approach based on the characteristic Raman signatures of different molecular...

486. Absolute Frequency Noise Characterisation of a 674 nm VECSEL for Trapped Ion Quantum Computing via Three-Cornered Hat Measurement

Tim F. Wohlers-Reichel (University of Oxford)

AIP | Quantum Science and Technology (QST)

Poster

We report the frequency stabilisation of a 674-nm vertical external-cavity surface-emitting laser (VECSEL) and characterisation of its absolute frequency noise, utilising a three-cornered hat measurement. The 674 nm wavelength addresses the $\textrm{S}_{1/2}$ → $\textrm{D}_{5/2}$ electric quadrupole transition in $^{88}\textrm{Sr}⁺$. This ion species is widely used for quantum computing,...

131. Altermagnetism-driven FFLO superconductivity in finite-filling 2D lattices

XiaJi LIU

AIP | Quantum Science and Technology (QST)

Poster

We systematically investigate the emergence of finite-momentum Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconductivity in a square lattice Hubbard model with finite filling, driven by either dxy-wave or dx2−y2 -wave altermagnetic order in the presence of on-site s-wave attractive interactions. Our study combines mean-field calculation in the superconducting phase with pairing instability...

756. Automated Die-Scale Cryogenic Characterization of SiMOS Spin Qubit Devices

AIP | Quantum Science and Technology (QST)

Poster

Quantum computers are rapidly approaching utility-scale operation, requiring not only high-fidelity qubit control but also scalable and reproducible fabrication. Silicon MOS spin qubits are a compelling platform to meet these requirements, offering compatibility with CMOS technology, a minimal footprint, and state-of-the-art gate fidelities [1]. However, cryogenic characterization is emerging...

540. Bias-free NV vector magnetometry utilising the zero field level anti-crossing

Leon Miller (Monash University)

AIP | Atomic and Molecular Physics (ATMOP)

Poster

Nitrogen-vacancy (NV) centres are emerging as a powerful platform for magnetic field sensing. However, the bias field required by most state-of-the-art NV vector magnetometers severely limits their deployable sensitivity beyond the ($\mathrm{nT/\sqrt{Hz}}$) range, as thermal and mechanical drifts of the bias field are indistinguishable from changes in the measured field. Furthermore, many...

526. Bioinspired Photonic Fiber Microlaser for Environmental Analysis

ANZOS | Photonics and Optics (ANZCOP)

Poster

Airborne pathogen plays an essential role for environment monitoring, infectious-disease warning, and public health surveillance; however, direct and reliable detection in air remains challenging. Unlike liquid-phase samples, airborne biological particles are sparsely and stochastically deposited, making it difficult to generate a stable optical response. As a result, the light-matter...

316. Certifying Bell nonlocality via spectral correlations in photonic qudits

Felicity Caruana (The University of Queensland)

AIP | Quantum Science and Technology (QST)

Poster

It is well-established that measurements on spatially separated qubits exhibit correlations that violate statistical limitations arising from local realism. These limitations are mathematically expressed by Bell-type inequalities. A violation of a Bell-type inequality is referred to as Bell nonlocality. In 2002, Collins, Gisin, Linden, Massar and Popescu (CGLMP) developed a generalisation of...

555. Characterising WSi films for superconducting nanowire single photon detector implementation

Brendan Zhang (UNSW)

ANZOS | Quantum Computing and Quantum Information (ANZCOP QCQI)

Poster

Single photon detection at near infrared (NIR) wavelengths has become an important aspect for photon based quantum technologies, with applications in quantum communication and information processing. With regards to detector devices, Superconducting Nanowire Single Photon Detectors (SNSPDs) remain the most promising when compared to alternatives such as single photon avalanche photodiodes....

712. Classical and Quantum Heuristics for the Binary Paint Shop Problem

V Vijendran (A*STAR QInC and CQT, NUS)

ANZOS | Quantum Computing and Quantum Information (ANZCOP QCQI)

Poster

The Binary Paint Shop Problem (BPSP) is a well-known $\mathsf{APX}$-hard optimisation problem with important applications in automotive manufacturing. Given a sequence of $2n$ cars, where each of $n$ car types appears exactly twice, the goal is to assign two colours so that each car type receives both colours while minimising consecutive colour changes. Performance is measured by the paint...

44. Collective Enhancement of Nuclear Excitation for a Nuclear Quantum Battery

Pravin Dahal (CSIRO)

AIP | Quantum Science and Technology (QST)

Poster

Quantum batteries offer the prospect of achieving charging advantages beyond those attainable in classical or independently charged systems by exploiting quantum resources for energy storage. In particular, collective charging can enhance the charging power relative to the parallel charging of individual cells, with quantitative bounds and scaling laws established in many-body battery models....

275. Color Symmetry Breaking in a Nonlinear Integrated Microresonator

Lewis Hill (Max Planck Institute for the Science of Light)

ANZOS | Photonics and Optics (ANZCOP)

Poster

Spontaneous symmetry breaking (SSB) is a ubiquitous physical phenomenon in which a symmetric system abruptly evolves into an asymmetric state under infinitesimal perturbations. In nonlinear photonics, Kerr-mediated SSB has previously been demonstrated between counterpropagating modes in microresonators and between orthogonal polarization modes [1,2].

Here, we experimentally demonstrate...

424. Comparative Analysis of Machine Learning Models for Early Prediction of Student Performance Using LMS Log Data

Abdulla Alseiari (Monash University)

AIP | Physics Education (PEG)

Poster

Identifying students at risk of academic failure early in the semester is critical for timely intervention. Previous work in physics education has shown that institutional variables such as cumulative GPA are critical for early prediction, with in-class variables becoming important only after the first examination [1], and that tuning the model was required to achieve better performance when...

319. Composing High-Dimensional Quantum Gates with Multi-Plane Light Conversion

Charlie Hu (University of Queensland)

AIP | Quantum Science and Technology (QST)

Poster

Qudits are the higher-dimensional version of the two-level qubits. Measuring a qudit results into any of $d$ orthogonal states, thereby providing a larger Hilbert space with increased information capacity for computation and communication applications. One natural route to encoding high-dimensional quantum information is through the transverse spatial structure of light, with each basis state...

686. Computational Insights into the Synthesis of Calcium Phosphate Coatings for Marble Cultural Heritage Conservation

Ria Stephenson (University of New South Wales)

AIP | Condensed Matter & Materials (CMM)

Poster

The question of mineralisation is pertinent in many fields. In particular, the nucleation of calcium phosphates is significant to studies of biomineralization and orthopaedics to, recently, the development of protective coatings for marble cultural heritage objects. In the latter instance, it has been shown that small amounts of organic solvent (ethanol, isopropanol, or acetone) aid in...

150. Convergent close-coupling approach to excitation in proton collisions with helium at intermediate energies

Dr Corey Plowman (Curtin University)

AIP | Atomic and Molecular Physics (ATMOP)

Poster

We have applied a semiclassical impact-parameter close-coupling method to calculate the state-resolved excitation cross sections in proton collisions with the ground state of helium. Using both correlation-configuration and frozen-core two-electron basis functions, we construct a large number of helium pseudostates to use in the expansion of the total scattering wave function. Extensive...

558. Convergent close-coupling calculations for electron-impact excitation and ionisation on $\text{B}^{+}$ ion

Prof. Dmitry Fursa (Curtin University)

AIP | Atomic and Molecular Physics (ATMOP)

Poster

Accurate atomic data for boron II ($\text{B}^{+}$) is essential for plasma modelling. In particular, there is currently a strong focus on using plasma modelling to interpret recent experiments on solid boron injection (SBI), a promising real-time alternative to conventional glow-discharge boronisation (GDB). In this work, we present a converged dataset of electron-impact excitation and...

30. Critique of the concept of inertia and spacetime

Branko Kovac

AIP | General Relativity and Gravitation (ASGRG)

Poster

Analysis of forces in mass dynamics shows that the inertial force satisfies the principle of action and reaction in every experiment on Earth. The concept that inertial force arises from the interaction of mass and space (either absolute, inertial or spacetime) doesn’t incorporate the action-reaction principle. Einstein also recognised the fact that the lack of a reaction to the inertial force...

632. Cryogenic, high frequency, low-loss interconnect platform for quantum devices.

Noah Stieler (University of New South Wales)

AIP | Quantum Science and Technology (QST)

Poster

Experiments with semiconductor quantum devices require thoughtfully crafted electronic hardware which suits the strenuous demands on signal integrity from DC to millimeter-wave frequencies.
Here, we present a cryogenic-compatible, non-magnetic printed circuit board (PCB) design to interface between semiconductor quantum devices and their classical control electronics. This PCB delivers 32...

268. Digital Interferometric Inter-Platform Sensor at the Gingin High Optical Power Facility

Sheon Chua (Australian National University)

AIP | General Relativity and Gravitation (ASGRG)

Poster

Ground based gravitational-wave detectors, such as Advanced LIGO [1], Advanced Virgo [2] and KAGRA [3], use active seismic isolation to reduce optical platform motion. However, inter-platform motion presents a significant noise challenge to the low frequency sensitivity of these instruments. To achieve future sensitivity targets, suspension platform interferometry (SPI) [4] provides a...

679. Doppler-based cross sectional imaging of layers in polar mesospheric radar echoes

Joel Younger (Flinders University)

AIP | Solar Terrestrial and Space Physics (STSP)

Poster

The first results of a new method for examining polar mesospheric summer echoes (PMSE) using a novel analysis of wide-beam radar observations is presented. PMSE occur when the region around the mesopause reaches temperatures below the sublimation point of water ice. In a phenomenon related to polar mesospheric clouds (PMC), this can produce strong radar echoes at VHF frequencies.

An...

747. Effects of Kerr nonlinearity in Brillouin-based optical memories

ANZOS | Photonics and Optics (ANZCOP)

Poster

Stimulated Brillouin scattering enables coherent coupling between optical and acoustic waves, providing a powerful platform for storing optical pulses in integrated photonic systems. Brillouin light storage relies on strict phase matching between the interacting optical and acoustic fields, making the process sensitive to the spectral and temporal properties of the optical pulses[1]. In...

625. Energetic Advantages for Quantum Agents in Online Execution of Complex Strategies

Dr Thomas Elliott (University of Manchester)

AIP | Quantum Science and Technology (QST)

Poster

The world is witnessing unprecedented automation - from self-driving vehicles and sophisticated large language models to automated trading algorithms and virtual agents. As we advance such agents to operate in ever more complex environments, successful agents must make ever more context decisions. Associated memory and energy costs are escalating at potentially unsustainable rates.

In...

672. Error Suppression with Almost Half Syndrome Density on IBM Hardware

Younghun Kim (University of Melbourne)

AIP | Quantum Science and Technology (QST)

Poster

Long-lived logical qubits are essential for fault-tolerant quantum computation. However, the practical performance of traditional error correction protocols relies on performing specific syndrome circuits, causing vulnerability to hardware defects and imposing rigid connectivity constraints. Recent theoretical findings have proposed that flexible subroutine circuits within the LUCI framework...

266. Exploring Superconductivity in 2D M2BC (M = Na, K, Nb) Materials & The Effects of Surface Hydrogenation

Ke Ri Liang (The University of Sydney)

AIP | Condensed Matter & Materials (CMM)

Poster

Ever since the discovery of superconductivity in mercury by Heike Kamerlingh Onnes in 1911, tremendous effort has been directed towards expanding the varieties of high $T_C$ superconducting materials. In recent decades, interest in 2D superconducting materials has been gaining momentum due to its numerous potential applications for nanoscale devices such as superconducting transistors, quantum...

223. Fate of Discrete Time Crystals in Finite-Size Cavity QED Systems

Haimi Nguyen

ANZOS | Photonics and Optics (ANZCOP)

Poster

It has recently been shown that Discrete Time Crystal (DTC) behavior may arise in the periodically driven, open Dicke model in the thermodynamic limit ($N \rightarrow \infty$). In this work, we demonstrate that finite $N$ non-mean-field fluctuations in this model can lead to decay rates and amplitudes of transient DTCs that display a non-trivial non-monotonic behavior with an increasing...

479. Fault Tolerant Resource Analysis for Parallelism in Qubitised Quantum Phase Estimation

Daniel Collins (UTS)

ANZOS | Quantum Computing and Quantum Information (ANZCOP QCQI)

Poster

The quantum simulation of quantum systems in materials science and quantum chemistry would have a considerable impact on both our understanding and industrial applications.
Such scientific and commercially relevant sized quantum simulations will require large scale fault tolerant quantum computers, and thus it is crucial that algorithms and compilation methods are improved to lower the...

553. First-Principles Investigation of Electron–Phonon-Mediated Superconductivity in Functionalized M$_2$XN$_2$ (M = Transition Metal; X = C, B) Two-Dimensional Monolayers

Syed Muhammad Hammad Naeem (The University of Sydney)

AIP | Condensed Matter & Materials (CMM)

Poster

After the successful discovery of MgB$_2$ (Tc= 39K) as a high-temperature superconductor has opened the doors for series of Boron and carbon based 2D models in condensed matter physics. Among different 2D materials, transition metals MXenes and MBenes (M$_2$X, where X = C, B) have been widely explored for their electronic, magnetic, and electrochemical properties, but have yet to be widely...

748. FPGA Control and Readout for Silicon Hole-Spin Qubit

Itamar Oren (UNSW)

AIP | Quantum Science and Technology (QST)

Poster

Silicon hole-spin qubits are a promising platform for scalable quantum computing because of their compatibility with established semiconductor fabrication technologies and their potential for fast, electrically driven qubit control through strong spin-orbit interactions. However, these advantages come with increased sensitivity to charge noise, placing stringent requirements on the performance...

72. From OzDES to TiDES: which supernova host galaxies get left behind?

Mr Alan Chan (Mount Stromlo Observatory, The Australian National University)

AIP | Astronomy (ASTRO)

Poster

Type Ia supernovae remain one of the key observational probes of dark energy, but their cosmological constraining power depends on constructing Hubble diagrams with well-understood biases. In future high-statistics time-domain surveys, including TiDES and LSST-era spectroscopic follow-up programmes, host-galaxy redshifts will often need to be obtained under finite spectroscopic resources. It...

65. Gravitational Time Dilation as a Logical Quantum Channel in Error-Corrected Memories

Sebastian Kish (University of Technology Sydney)

AIP | Quantum Science and Technology (QST)

Poster

We show that when one half of a logical Bell pair is transported through a gravitational field, the differential proper time accumulated between two error-corrected memories manifests as a relative unitary $U_{\rm rel} = U_A^\dagger U_B$ in the reference frame of the stationary memory. This evolution is indistinguishable from free precession within each memory's local inertial frame, and is...

769. High-impedance TiN resonators for flip-chip integration with SiMOS electron spin qubits

Cédric Bohémier

ANZOS | Quantum Computing and Quantum Information (ANZCOP QCQI)

Poster

Coupling electron spins to microwave photons directly is a challenge, due to the intrinsically weak magnetic dipole interaction. To overcome this, most work involved creating an artificial spin-orbit coupling (SOC) via micromagnets. This, however, imposes spatial constraints on device scaling. Recently, it was shown that the intrinsic SOC in SiMOS spin qubits can be heavily amplified by...

807. High-Power Single-Frequency Diamond Lasers with Tailorable Spatial Modes

Zhenxu Bai (School of Electronics and Information Engineering, Hebei University of Technology)

ANZOS | Photonics and Optics (ANZCOP)

Poster

High-power single-frequency lasers with controllable spatial modes are highly desirable for coherent detection, precision measurement, remote sensing, and nonlinear optics. However, simultaneously achieving high power, narrow linewidth, low noise, and flexible spatial-mode control remains challenging. In this presentation, we will introduce our recent progress in high-power single-frequency...

330. History of Australian Astronomy – a new Chapter

AIP | Astronomy (ASTRO)

Poster

History of Australian Astronomy Chapter (HAAC) is a new chapter of the Astronomical Society of Australia. With the enthusiastic support of people across Australia, the chapter was established to recognise Australia’s rich and diverse astronomical history, both Indigenous and European. The chapter aims to bring together astronomers, historians, curators, educators and specialists in this field...

727. How accretion rate affects the concentration and spin of dark matter halos and galaxies?

Sama Baloch

AIP | Astronomy (ASTRO)

Poster

Dark matter halo formation history correlates strongly with halo concentration,
but it remains unclear if other halo and galaxy properties retain memory of
assembly once halo mass is fixed. We use the large-volume hydrodynamical
FLAMINGO simulation
to investigate this question for a statistically robust sample of 30,665 central haloes
selected in a narrow present-day mass bin centred on...

678. How Black Holes Remain Neutron Stars

Martin Cole (Independent Researcher)

AIP | Astronomy (ASTRO)

Poster

Abstract
Experiments in high-energy particle physics reveal that neutrons withstand very high levels of mutual compression – the levels expected inside Neutron Stars. No limit to this elastic compressibility is indicated. A new approach to the general relativity (GR) modelling of Neutron Star cores is here suggested, utilizing a robust internal observer. As Neutron Stars are modelled at...

415. Internal and external field effects upon crystal field excitations in $REFeO_3$ (RE = $Nd^{3+}$, $Er^{3+}$, $Yb^{3+}$, $Pr^{3+}$, and $Ho^{3+}$)

Guochu Deng (Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organization)

AIP | Condensed Matter & Materials (CMM)

Poster

We systematically investigated crystal-field (CF) excitations of Kramers ($Nd^{3+}$, $Er^{3+}$, $Yb^{3+}$) and non-Kramers ($Pr^{3+}$, $Ho^{3+}$) rare-earth ions in $REFeO_3$ using optimized CF simulations. Internal magnetic fields from the $Fe^{3+}$ and $RE^{3+}$ sublattices split the ground-state doublets of all Kramers ions, generating low-energy excitations around 1 meV. In non-Kramers...

409. Laser frequency stabilisation with coating-free monolithic optical reference cavities

Evan Hall (Massachusetts Institute of Technology)

AIP | Quantum Science and Technology (QST)

Poster

Laser frequency stabilisation with coating-free monolithic optical reference cavities

Optical reference cavities are capable of frequency-stabilising laser light down to the level set by fundamental quantum-mechanical and thermodynamic limits, with wide application in fundamental and applied physics. Today, many of the most frequency-stable reference cavities are limited by the Brownian...

425. Light-driven control of quantum transport through molecular electronic junctions

AIP | Quantum Science and Technology (QST)

Poster

Controlling charge and spin transport in single-molecule junctions is a central goal of molecular electronics. An external optical field is attractive as a transport control strategy: it is fast, reversible, and carries its own internal degree of freedom from the handedness of polarisation. Circularly polarised light (CPL) is particularly compelling because it breaks time-reversal symmetry...

638. Linear-optical scheme for the heralded generation of photonic W states

Trip Thripsuwan (Griffith University, Queensland Quantum and Advanced Technologies Research Institute)

AIP | Quantum Science and Technology (QST)

Poster

Photonic W states are a class of multipartite entangled states with potential applications in quantum communication, quantum networking, and distributed quantum information processing [1]. We theoretically investigate the generation of a heralded dual-rail encoded three-photon photonic W state using a linear optical circuit with six photons in nine modes, where three photons are detected as...

345. Low Resolution, High Through-put Spectrometer for Rapid Transient Follow-up with Robotic Telescopes

1

AIP | Astronomy (ASTRO)

Poster

Transient astronomy is a growing field. As stable objects are well studied due to historical development of infrastructure and data collection techniques for long exposure, high resolution and stable targets, while the tools for short time scales are far less common and now in very high demand. With the introduction of the Vera Rubin observatory, combined with other wide survey tools, the...

591. Momentum Correlations in Bose-Fermi Scattering Halos

ANZOS | Quantum and Atom Optics (ANZCOP QAO)

Poster

Momentum correlations within a Bose-Fermi mixture are affected by the different statistical properties of bosons and fermions, making their theoretical calculation non-trivial. By bringing $^3$He and $^4$He to degeneracy using a combination of sympathetic, evaporative and laser cooling techniques as outlined in [1,2], we can produce a Bose-Fermi mixture and investigate the interaction...

145. Multi-dimensional spectroscopy of mobile excitons in two-dimensional semiconductors

AIP | Condensed Matter & Materials (CMM)

Poster

Multi-dimensional coherent spectroscopy (MDCS) goes beyond standard linear-response probes and provides a powerful tool for investigating correlations between quasiparticles such as excitons (bound electron-hole pairs). Here we present a microscopic theory of MDCS that accounts for the delocalized nature of excitons in two-dimensional semiconductors. In contrast to the more phenomenological...

129. Nano-needle-induced strain tunes and enhances excitonic emission in monolayer MoS₂

Rashed Hussain Lone (RMIT University)

AIP | Condensed Matter & Materials (CMM)

Poster

Controlling the optical response of two-dimensional semiconductors through strain has become an important strategy for improving their optoelectronic performance. Here, we report a significant enhancement of excitonic photoluminescence in monolayer MoS₂ arising from nano-needle-like oxide protrusions that develop during a photo-oxidation-assisted exfoliation process. These structures appear...

520. Optical Coherence Tomography of Human Lymphatic Vessels to Inform Computational Modelling of Lymphoedema

Simran Maharaj (Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand. The Dodd Walls Centre for Quantum and Photonic Technology.)

ANZOS | Photonics and Optics (ANZCOP)

Poster

Breast cancer-related lymphoedema is a chronic condition characterised by tissue swelling in the upper extremities, affecting approximately 20% of breast cancer patients following treatment [1]. This incurable disease arises when the lymphatic system is damaged and fails to maintain tissue fluid homeostasis by transporting excess interstitial fluid back to the bloodstream. Despite advances in...

84. Optimisation of Spatial-Polarisation Hyperentangled States in Nonlinear Coupled Waveguides: A Biphoton Wavefunction Parameter Bell State Analysis

Harshna Vithya Saahar Gounder (University of Technology ydney)

AIP | Quantum Science and Technology (QST)

Poster

Hyperentanglement allows simultaneous quantum entanglement across multiple degrees of freedom (DOFs), scaling quantum technologies. Miniaturised devices offer higher biphoton pair-generation rates than bulk optics [1], while waveguide confinement minimises environmental decoherence [2]. However, shifting between distinct hyperentangled Bell states typically requires hardware modifications or...

40. Photoelectric Effect Enhanced Renewable Energy to Remove Energy Crisis in Bangladesh

Dr Dr. Ranojit Kumar Dutta (City University, Department of Science and Humanities (DSH), Faculty of Science and Engineering, Birulia, Savar, Dhaka, 1340, Bangladesh)

ANZOS | Photonics and Optics (ANZCOP)

Poster

Bangladesh is currently facing a growing energy crisis due to increasing electricity demand, dependence on fossil fuels, rising fuel costs, and environmental pollution. This study examines how the photoelectric effect can support renewable energy development and help reduce the energy shortage in Bangladesh. The photoelectric effect is the scientific principle behind solar photovoltaic...

607. Photonic Control of Roton Excitations in Superfluid Helium

Samuel Kirwin-Jones (University of Queensland)

AIP | Quantum Science and Technology (QST)

Poster

Proposed by Landau in the 1940s [1], rotons are collective excitations in superfluid with relatively high momentum, compared to commonplace phonons. They are known to be responsible for the superfluid critical velocity, below which flow is unimpeded, illustrating their importance in superfluid behaviour. Optical generation of rotons was first achieved in 1969 using Raman scattering [2]. More...

608. Polarised neutron scattering capabilities for studies of magnetism and soft-matter samples at the Australian Centre for Neutron Scattering

Andrew Manning

AIP | Condensed Matter & Materials (CMM)

Poster

Neutron scattering is a versatile probe for a variety of condensed matter systems, and the ability to control and distinguish the spin of neutrons during the measurement process allows more detailed information to be obtained for both magnetic and non-magnetic samples. At the Australian Centre for Neutron Scattering (ACNS), we are able to offer neutron spin filters on six different neutron...

191. Polaron to clock shift: Spectroscopy of an impurity immersed in a Bose gas across the condensation threshold

Jesper Levinsen (Monash University)

AIP | Quantum Science and Technology (QST)

Poster

Recent fundamental spectroscopic measurements of strongly interacting impurities immersed in a thermal Bose gas (Etrych et al., 2025) have raised an intriguing, yet foundational question: what constitutes a polaron? To answer this, we theoretically investigate the impurity spectral response in a two-component thermal Bose gas across the entire phase diagram, from a Bose-Einstein condensate to...

371. Positron scattering from ultracold $^{87}$Rb atoms

AIP | Atomic and Molecular Physics (ATMOP)

Poster

Traditional positron scattering experiments are limited by their reliance on unpolarized, thermal atomic targets, which yield spin averaged cross-sections and obscure the underlying quantum exchange dynamics [1].This work addresses these limitations by employing a $^{87}$Rb Magneto-Optical Trap (MOT) to perform state-selective measurements of positron–atom interactions.
The selection of...

758. Post-Quantum Foundations for Data Security

Max Fleming

ANZOS | Quantum Computing and Quantum Information (ANZCOP QCQI)

Poster

The "harvest-now, decrypt-later" threat has spurred the search for post-quantum cryptographic schemes whose security should hold up against quantum attack. Of the candidates, lattice-based constructions have emerged as the leading family, built on problems such as the Shortest Vector Problem and Learning With Errors (LWE). These constructions provide a foundation for post-quantum security,...

175. Precision Bounds for Characterising Quantum Measurements

Dr Aritra Das

AIP | Quantum Science and Technology (QST)

Poster

In many quantum information settings, quantum systems consist of three key components—states, process, and detectors—the precise estimation of which is essential for benchmarking device performance, mitigating errors, and enabling improvements toward utility-scale quantum technologies. The precise estimation of quantum states has been addressed by the state quantum Fisher Information (sQFI)...

77. Quantum Spectral Authentication under Public Unitary Challenges

Sebastian Kish (University of Technology Sydney)

AIP | Quantum Science and Technology (QST)

Poster

We introduce Quantum Spectral Authentication (QSA), a primitive for verifying that a remote quantum endpoint still possesses a previously installed secret quantum resource such as a hidden state or state-preparation capability without revealing that secret [arXiv:2603.24868]. The core idea is to exploit spectral features of the planted
state under fresh public unitary challenges: each...

273. Rare-region effects on the critical dynamics of neuromorphic nanowire networks

Ibrahim Al Azki (RMIT University)

AIP | Condensed Matter & Materials (CMM)

Poster

Criticality has been proposed as a computationally advantageous operating regime in neuromorphic systems, but its practical implementation is challenged by the need to tune system parameters to a critical point precisely. In disordered systems, structural heterogeneity can generate rare-region effects that modify the nature of phase transitions. Here, we investigate the influence of a...

653. Reducing the effective mass of two-dimensional holes in silicon MOSFETs via crystal orientation

Daniel Duncan (School of Physics, University of New South Wales)

AIP | Condensed Matter & Materials (CMM)

Poster

Holes in silicon are a promising approach to quantum devices due to their strong intrinsic spin-orbit coupling and compatibility with legacy semiconductor fabrication. However, recent work by Wendoloski et al. [1] suggests that holes in silicon have a larger transverse effective mass than naïve expectations, approximately $0.6m_0-0.7m_0$, as compared with the traditional band-edge value of...

509. Reporting the Characterization of a Sub-Neptune in the TOI 717 System

Arunabh Pratik (Cambridge Center for International Research)

AIP | Astronomy (ASTRO)

Poster

The Transiting Exoplanet Survey Satellite (TESS) helps identify thousands of exoplanet candidates using the transit method. This study analyzes 30 TESS light curves to characterize any potential exoplanets. After running our own BLS algorithm, we narrowed down the candidates to three. However, because many transit-like signals are false positives from nearby eclipsing binary systems (NEBs) or...

372. Shape Reconstruction via Surface Angle Estimation and Material Identification via Broadband Multi-Wavelength Measurement, Using a Photo-Thermoelectric Type Sensor

Mitsuki Kosaka (Faculty of Science and Engineering, Chuo University)

ANZOS | Photonics and Optics (ANZCOP)

Poster

Long-wavelength optical measurement has attracted significant attention in non-destructive inspection as a non-contact, non-invasive method. Research utilizing carbon nanotube (CNT) film sensors combines their ultra-wide bandwidth with high optical absorbance. This unique combination enables observers to evaluate optical properties across a range of wavelengths. Consequently, the evaluation...

631. Simulating temporally correlated random telegraph noise from coupled charge traps

Lucija Grba (The University of New South Wales)

AIP | Quantum Science and Technology (QST)

Poster

Quantum devices are subject to noise detrimental to their qubits' fidelity and coherence times. In spin qubits, one of the dominant noise sources is charge noise arising from device defects that form charge traps. Dynamical decoupling (DD) can refocus qubits, cancelling noise fluctuations well below or well above the DD pulse repetition rate. However, it acts as a narrow filter, leaving noise...

178. Single crystal developments on Wombat, the high intensity neutron diffractometer at ANSTO

Siobhan Tobin (ANSTO)

AIP | Condensed Matter & Materials (CMM)

Poster

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...

164. Single Electrons on Solid Neon: Toward Charge-Qubit Realization

Xuan Thanh Nguyen (UNSW Sydney)

AIP | Quantum Science and Technology (QST)

Poster

Electrons floating in vacuum provide a clean platform for quantum information processing due to their isolation from material defects. Electrons on solid neon have emerged as a promising qubit platform, with previous studies reporting long coherent time and high single-qubit gate fidelity [1]. Here, as a step toward the realization of a charge qubit, we couple electrons trapped on solid neon...

537. Stochastic Resetting Accelerates Reinforcement Learning Beyond Random Search

Wave Ngampruetikorn (University of Sydney)

AIP | Theoretical Physics (TPG)

Poster

Stochastic resetting—intermittently returning a process to a fixed reference state—has emerged as an effective mechanism for optimizing first-passage properties. Existing theory largely treats processes that search but do not learn: the searcher follows fixed dynamics, accumulating no knowledge between resets. Here we ask how stochastic resetting interacts with reinforcement learning, where...

28. Strong cosmic censorship theorem in Bakry-Emery spacetimes

Makoto Narita

AIP | General Relativity and Gravitation (ASGRG)

Poster

A class of naked strong curvature singularities is ruled out in Bakry-Emery spacetimes by using techniques of differential topology in Lorentzian manifolds. These spacetimes admit a Bakry-Emery-Ricci tensor which is a generalization of the Ricci tensor. This result supports to validity of Penrose's strong cosmic censorship conjecture in scalar-tensor gravitational theories, which include...

654. Structural and functional analyses of STM14_5441-STM14_5442: A potential mechanism for persister formation against aminoglycosides

BONGJIN LEE (college of pharmacy, Seoul National University, Korea)

ANZOS | Photonics and Optics (ANZCOP)

Poster

The ResTA module (STM14_5441 – STM14_5442) is a type II toxin–antitoxin system composed of the RNase toxin ResT and the antitoxin ResA, implicated in bacterial persistence under antibiotic stress. Here, we report crystal structures of the Salmonella Typhimurium ResTA complex and characterize the molecular function of ResT as a ribosome-dependent RNase. Structural analysis and mutational...

328. Superconducting Single Photon Detectors for quantum information Processing

AIP | Quantum Science and Technology (QST)

Poster

Photon based quantum technologies, such as quantum key distribution (QKD) or quantum computing, require single photon sources and single photon detectors. In terms of detectors, Superconducting Nanowire Single Photon Detectors (SNSPDs) have demonstrated their superiority towards for example single-photon avalanche photodiodes (SPADs). These detectors exhibit near unity quantum efficiency,...

137. Symmetry breaking-induced charge localisation and alternating polar domains in twisted BTO/STO bilayers

Yazeed Alnafie

AIP | Condensed Matter & Materials (CMM)

Poster

The first experimental realization of the moiré effect in bilayer graphene at the “magic” 1.1° [1] has led to the discovery of remarkable phenomena, including unconventional superconductivity and the quantum anomalous Hall effect. Twisted two-dimensional heterostructures are emerging as an active field for exploration of unexplored physical phenomena. Recently, twisted oxide heterostructures...

32. Synthesis and Characterization of Thin Films by Spray Pyrolysis Technique for Advanced Functional Applications

Dr Ranojit Kumar Dutta (City University, Department of Science and Humanities (DSH), Faculty of Science and Engineering, Birulia, Savar, Dhaka, 1340, Bangladesh)

AIP | Condensed Matter & Materials (CMM)

Poster

Thin film technology plays a crucial role in modern scientific and industrial applications, such as solar cells, sensors, optoelectronic devices, and environmental remediation systems. Among the various deposition techniques, spray pyrolysis has emerged as a cost-effective, simple, and scalable method for producing high-quality thin films with controlled morphology and composition.

This...

177. Tandem Solar Cells for Energy Efficient Colour-Neutral Photovoltaic Windows

Jueming Bing

AIP | Solar Terrestrial and Space Physics (STSP)

Poster

Increasing urban developments increases energy demands which can be partly met by innovative building integrated photovoltaic solutions such as energy efficient photovoltaic windows that are semitransparent and colour neutral for visual amenities. Tandem cells if well designed in solar windows may improve conversion of high- and low- energy photons from the solar spectrum into electrical...

331. The Australia Wide Eclipse 2028 – when, where and why you can be involved

AIP | Astronomy (ASTRO)

Poster

On 22 July 2028, a total solar eclipse will cross Australia from the Kimberley of Western
Australia, through the Northern Territory and Queensland into New South Wales, with totality passing directly over Sydney. The path of totality covers almost 25% of the Australian population and over 70% of the NSW population, presenting an exceptional opportunity for astronomy and other physics outreach...

81. The development of tunable pinhole based polymer dispersed liquid crystal for confocal laser scanning microscopy

ANZOS | Photonics and Optics (ANZCOP)

Poster

Confocal laser scanning microscopy (CLSM) is a three-dimensional see-through optical imaging system that employs a laser as a light source to enable noninvasive observation of a sample’s internal structures. Among the various optical components constituting CLSM, a pinhole, which is a micron-scale circular spatial filter, is essential. A pinhole is an optical element that enables optical...

457. The Impact of Ambient Gas Conditions and Delay Time on Emission Characteristics of Al Plasma Generated using Nanosecond Laser-Induced Breakdown Spectroscopy (ns-LIBS)

Ms Hira Aziz (The University of Chenab, Gujrat)

ANZOS | Photonics and Optics (ANZCOP)

Poster

This paper employs nanosecond laser-induced breakdown spectroscopy (ns-LIBS) to investigate the emission enhancement of aluminum (Al) targets under various gases including helium (He), argon (Ar), and air. A Q-switched Nd: YAG laser emitting at 1064 nm with 5 ns of pulse duration was utilized to generate the Al plasma. The measured results reveal that the intensity enhancement factor exhibits...

363. The influence of chemical structure on the electronic structure of molecular systems.

Darryl Jones (Flinders University)

AIP | Atomic and Molecular Physics (ATMOP)

Poster

The evolution and conservation of orbital symmetry is important in understanding stereochemical reactions [1]. We are therefore interested in studying how orbital structure evolves with changes to the chemical structure and the motion of the constituent atoms. Here we use experimental and theoretical techniques based on the orbital imaging capability of electron momentum spectroscopy [2,3]....

228. The study of electronic structures, microstructures and oxidation states of Eu3Fe5O12/Tb3Fe5O12/Gd3Ga5O12 (111) thin films

Prof. Ko-Wei Lin (National Chung Hsing University, Taiwan)

AIP | Condensed Matter & Materials (CMM)

Poster

The rare-earth ion garnets (ReIG) thin films have been studied recently due to potential applications in spintronics [1]. We have demonstrated previously where the polarized neutron reflectometry (PNR) was used to study the magnetic proximity behavior at interfaces of Pt/Tb3Fe5O12/Gd3Ga5O12 (111) thin films [2]. In this study, the electronic properties, microstructures, and oxidation states of...

214. Three-dimensional spectroscopic analysis of DDS nanoparticles using a vectorial nonlinear confocal laser microscope

Chikara Egami (Shizuoka University)

ANZOS | Photonics and Optics (ANZCOP)

Poster

In this work, we propose a three-dimensional (3D) nonlinear optical imaging scheme for the spectroscopic characterization of drug delivery system (DDS) nanoparticles based on a nonlinear confocal microscope. In recent years, numerous drug delivery system (DDS) nanoparticles, such as liposomes and micelles, have been engineered to achieve drug release by utilizing pH-responsive structural...

674. Time-Dynamic Circuits for Fault-Tolerant Shift Automorphisms in Quantum LDPC Codes

AIP | Quantum Science and Technology (QST)

Poster

Quantum low-density parity-check (qLDPC) codes have emerged as a promising approach for realizing low-overhead logical quantum memories. Recent theoretical developments have established shift automorphisms as a fundamental building block for completing the universal set of logical gates for qLDPC codes. However, practical challenges remain because the existing SWAP-based shift automorphism...

467. TMSV-Enabled Ultra-Sensitive Interferometry with Phase-Independence

Hongbin Song (The Chinese University of Hong Kong, Shenzhen)

ANZOS | Quantum Computing and Quantum Information (ANZCOP QCQI)

Poster

Abstract

The nonlocal correlations between entangled particles establish quantum entanglement as a fundamental resource for quantum information processing, including quantum communication, computing, and metrology [1]. Compared to conventional Gaussian entangled states, such as the two-mode squeezed vacuum state (TMSV), non-Gaussian entangled states generated via operations like photon...

759. Towards a Self-Referenced Optical Cavity Using Temperature-Induced Diamond Birefringence

Krishnapriya Pulluveetil Jayadevan (Macquarie University)

ANZOS | Photonics and Optics (ANZCOP)

Poster

Abstract
Ultra-stable lasers are essential for optical atomic clocks, quantum sensors, precision spectroscopy, and navigation systems. Current state ofthe art frequency stabilisation techniques mainly rely on cryogenic reference cavities to suppress temperature and vibrational variation.
While these approaches are highly effective, it also increases system complexity and limit the...

198. Towards an Implantable Device for Light Based Organ Control

Jeffery Low (The University of Auckland)

ANZOS | Photonics and Optics (ANZCOP)

Poster

Optogenetics is an exciting field that combines optics with biology and genetic engineering. One of the main subjects of study in optogenetics are methods to control the activation of nerve cells with light. A device that can leverage the ability of optogenetics to control organs that are normal regulated by the parasympathetic nervous system will allow us to deliver new forms of medical...

341. Towards the precision measurement of $2^3S_1-$$2^3P$ transitions in metastable helium isotopes for testing QED theories

AIP | Atomic and Molecular Physics (ATMOP)

Poster

High-precision spectroscopy of atomic species provides a powerful means of testing quantum electrodynamics(QED) and its theoretical frameworks. Helium has one of the simplest atomic structures, and QED calculations for helium have advanced to include corrections up to order $m\alpha^7$ [1]. Consequently, precision spectroscopy of helium has become the focus of many groups worldwide [2-6]. At...

352. Twist Angle-Induced Chirality in an Anisotropic MoOCl$_2$ Metasurface

Phoenix Casey (Monash University)

AIP | Condensed Matter & Materials (CMM)

Poster

Optical chirality is a consistent topic of interest due to its diverse applications in medical research, particularly for drug design where proteins frequently exhibit distinct enantioselectivity toward binding partners [1,2]. Meta-optical designs can significantly enhance structural chiral responses by altering intrinsic symmetry using techniques such as chiral meta-atoms and monoclinic...

460. Two-Photon UV Laser Etching of Diamond: Influence of Boron Doping on Etch Rate and Surface Morphology

ANZOS | Photonics and Optics (ANZCOP)

Poster

Controlled modification of diamond surfaces is important for quantum technologies, biosensing, photonics, and electronic devices. Conventional processing methods may introduce surface damage or contamination and may provide limited control at shallow removal depths. Previous studies have reported UV laser etching of diamond, with the etch rate increasing approximately quadratically with laser...

374. Ultra-Broadband Optical Sensing Using a Carbon Nanotube Film-Based Camera and Visual Augmentation-Based Non-Destructive Inspection with Augmented Reality

ANZOS | Photonics and Optics (ANZCOP)

Poster

In recent years, failures caused by aging infrastructure have become more common. However, visual inspections via human eyes still represent a major part of the inspection methods for such facilities. These inspections depend on heavily experience and intuition of the inspector, and they take a lot of working time. Therefore, this work introduces a non-destructive inspection system that...

696. Uncovering Non-Equilibrium Dynamics of Segregation with Time-Dependant Schelling Model

Genevieve Geehan (University of Sydney, School of Physics, Complex Systems)

AIP | Condensed Matter & Materials (CMM)

Poster

Schelling’s 1971 model of segregation proposed a simple rule similar to the Ising model of ferromagnetism to determine what minimum percentage for preference of sameness in an agent’s neighbours would lead to global segregation. The surprising result that a mild preference was sufficient to cause the emergence of an equilibrium state of segregated communities speaks volumes in today's...

344. Wichmann-Kroll vacuum polarization correction to lithium-like systems in a Gaussian basis set

AIP | Atomic and Molecular Physics (ATMOP)

Poster

The most fundamental description of the interaction between matter and light lies within the theoretical framework of quantum electrodynamics (QED). For atomic and molecular systems, QED calculations require complicated non-perturbative approaches that incorporate all orders of the coupling constant $Z\alpha$, where $Z$ is the nuclear charge and $\alpha$ is the fine-structure constant....