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

Session

AIP QST: Nonclassical optical states & interference

QST

9 Dec 2026, 14:30

Belinda Hutchinson Building (The University of Sydney )

387. Enhanced Squeezing from a Nonlinear Coupled Cavity

Tianqi Shen (Australian National University)

09/12/2026, 14:30

AIP | Quantum Science and Technology (QST)

Contributed Oral

Gravitational-wave detectors (GWDs) are fundamentally limited by quantum noise at kilohertz frequencies, reducing their sensitivity to binary neutron star mergers at the 0.9–5 kHz band. While externally injected squeezed vacuum is routinely used to suppress quantum noise, its bandwidth is fundamentally constrained. To overcome this limitation, a promising approach is to combine a lengthened...

528. Noiseless linear amplification of two-photon optical states

09/12/2026, 14:45

AIP | Quantum Science and Technology (QST)

Contributed Oral

Photonic loss is one of the key obstacles for optical quantum information science on the path towards quantum advantage in communication, computation, and measurement. Perfect quantum amplification of unknown quantum states is prohibited by the no-cloning theorem, leaving the community to search for practical methods to overcome the effects of loss on optical quantum states. Probabilistic...

397. Neglected Distinguishability is Not Indistinguishability: Hidden Entanglement in Post-Selected Interference

Tony Yan (The Australian National University)

09/12/2026, 15:00

AIP | Quantum Science and Technology (QST)

Contributed Oral

Interference between multiple spontaneous parametric down-conversion sources produces phase-dependent two-photon coincidence fringes with no single-source analogue. In frustrated-interference and path-identity experiments, a coincidence channel can go dark through destructive interference between source amplitudes. In recent three- and four-source versions, Jiang et al., Nat. Commun. 2026...

647. Generation of a heralded three-mode NOON state

Dr Simon White (Queensland Quantum and Advanced Technologies Research Institute, Centre for Quantum Computation and Communication Technology, Griffith University, Yuggera Country, Brisbane, Queensland, 4111 Australia)

09/12/2026, 15:15

AIP | Quantum Science and Technology (QST)

Contributed Oral

The generation of entangled quantum states of photons is a key capability for a vast range of technologies and forms the foundations of quantum communication, computation, and metrology. In photonics, due to the lack of strong photon-photon interactions, the generation of the vast majority of entangled states is probabilistic. This typically requires post-selection to identify successful...