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

Session

AIP QST: Non-Markovian noise, control & error mitigation

QST

10 Dec 2026, 14:00

Belinda Hutchinson Building (The University of Sydney )

418. Developments on non-Markovian noise in superconducting qubits

Christina Giarmatzi (Macquarie University)

10/12/2026, 14:00

AIP | Quantum Science and Technology (QST)

Contributed Oral

In this talk, I will give an overview of the latest published and unpublished results of my group on non-Markovian noise in superconducting qubits. Non-Markovian noise arises from unwanted interactions of our qubits with their environment. During a quantum circuit, these interactions causes errors at each step of the circuit. These errors can be correlated, resulting in non-Markovian (or...

768. Learning and forecasting non-Markovian noise on superconducting processors

Jasleen Kaur (Macquarie University, Sydney, Australia)

10/12/2026, 14:15

AIP | Quantum Science and Technology (QST)

Contributed Oral

Non-Markovian dynamics is a practically relevant feature of open quantum systems and can significantly influence the behaviour of noisy quantum devices. However, its characterization typically requires full multi-time process tomography, which is experimentally and computationally expensive, and, therefore, difficult to use as a routine diagnostic tool. In this work, we develop a resource...

34. Non-Markovian dynamics of a TLS due to indirect interactions with other TLSs

Dr Muhammad Faryad (Lahore University of Management Sciences)

10/12/2026, 14:30

AIP | Quantum Science and Technology (QST)

Contributed Oral

Non-Markovian effects are often significant when the system-environment coupling is not weak. We show that, within the framework of pure dephasing, the non-Markovianity displayed by a two-level system (TLS) can, in fact, be far more pronounced. To demonstrate that this is indeed the case, we consider a pure dephasing model where a collection of TLSs interacts with a common environment. We...

752. Optimising gate performance against non-Markovian noise

Soumik Mahanti (University of Technology Sydney)

10/12/2026, 14:45

AIP | Quantum Science and Technology (QST)

Contributed Oral

Noise is a fundamental barrier to realising practical quantum advantage. While modern quantum hardware has made significant progress in mitigating standard, temporally uncorrelated noise, non-Markovian (NM) noise, typically arising from correlations between a system and its environment over multiple time steps, remains largely unaddressed. Standard benchmarking techniques, such as randomized...

123. Multi-level random noise mitigation using spectator qubits

Yanan Liu

10/12/2026, 15:00

AIP | Quantum Science and Technology (QST)

Contributed Oral

Preserving quantum coherence in the presence of environmental noise is a central challenge for quantum technologies. Noise mitigation using spectator qubits (SQs) has recently emerged as a promising approach, enabling indirect probing of the noise without disturbing the data qubit (DQ). However, existing analyses are largely restricted to two-level fluctuator models, typically described by...

648. Quantum Error Mitigation for Mid-circuit measurements and Feedforward

Prof. Jayne Thompson (Nanyang Technological University)

10/12/2026, 15:15

AIP | Quantum Science and Technology (QST)

Contributed Oral

Recent advances in quantum computing have enabled mid-circuit measurements and feedforward, allowing real-time adjustments to quantum circuits based on earlier measurement outcomes. This capability is essential for a wide range of applications, such as measurement-based quantum computing, while loops, the ability to reset and reuse qubits during a computation, and error correction.

As...