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

Session

AIP QST: Quantum dynamics & hybrid simulation

QST

11 Dec 2026, 09:00

Belinda Hutchinson Building (The University of Sydney )

782. On the connection between quantum chaos and randomness in closed- and open-system quantum dynamics

Nathan Langford (Centre for Quantum Software and Information, School of Mathematical and Physical Sciences, University of Technology Sydney)

11/12/2026, 09:00

AIP | Quantum Science and Technology (QST)

Invited talk

Quantum chaos is often understood as the dynamics found in quantum systems that exhibit classical chaos in the large-system limit. Classically chaotic systems exhibit randomness resulting from divergent sensitivity to system parameters, making accurate simulation difficult. In quantum computing, algorithms like digital quantum simulations will only be useful when systems cannot be simulated...

189. Non-Abelian dynamics on a cube: Improving quantum compilation through qudit-based simulations

Jacky Jiang (Quantum Theory Group - The University of Sydney)

11/12/2026, 09:30

AIP | Quantum Science and Technology (QST)

Contributed Oral

Advancements in mapping lattice gauge theories to digital quantum computers have reached a stage where explicit compilation of the associated quantum circuits is possible. As an entry point to these compilation challenges, we describe the optimized quantum circuitry for simulating the real-time dynamics of SU(2) lattice gauge theory on a cube. Using a qudit-based quantum computer, where the...

186. Simulating dynamics in structured environments on hybrid CV-DV quantum simulators

Liam Flew (University of Sydney)

11/12/2026, 09:45

AIP | Quantum Science and Technology (QST)

Contributed Oral

Simulating open quantum systems is computationally challenging, particularly in the non-Markovian regime, where the system’s evolution depends on its history. Due to this computational cost, classical approaches for modelling such dynamics are limited to small systems or simple models. Quantum computing offers a promising route for overcoming these limitations; however, existing methods for...

416. Programable quantum simulation of continuous-variable anharmonic and nonlinear dynamics

Kai Schwennicke (The University of Sydney)

11/12/2026, 10:00

AIP | Quantum Science and Technology (QST)

Contributed Oral

Hybrid continuous-variable–discrete-variable (CV-DV) quantum computers are promising platforms for quantum simulation, particularly when the continuous-variable degrees of freedom are harmonic. Extending hybrid CV-DV quantum simulation beyond harmonic dynamics requires efficient methods for implementing non-Gaussian operations. However, existing schemes are primarily restricted to a single...

742. Optimising Qubit-Cavity Gates for Digital Quantum Simulations

Joshua Tran (University of Technology Sydney)

11/12/2026, 10:15

AIP | Quantum Science and Technology (QST)

Contributed Oral

Digital quantum simulations (DQS) model complex quantum systems by discretising continuous, complex time evolution into sequences of implementable physical gates. For example, the quantum Rabi model has been simulated in circuit QED by interleaving Jaynes-Cummings (JC) interaction gates with fast single-qubit π-gates [1]. Achieving outsized computational complexity relative to processor...