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

Session

ANZCOP: Quantum Metasurfaces

ANZCOP

9 Dec 2026, 11:00

Belinda Hutchinson Building (The University of Sydney )

Conveners

ANZCOP: Quantum Metasurfaces

• Jiayang Wu (Optical Sciences Centre |Swinburne University of Technology)

172. Nonlinearity-Induced Chirality in Achiral Resonant Metasurfaces

Dr Kirill Koshelev (Department of Electronic Materials Engineering, Research School of Physics, Australian National University)

09/12/2026, 11:00

ANZOS | Photonics and Optics (ANZCOP)

Invited talk

Chiral optical responses in metasurfaces are typically engineered through structural chirality or extrinsic symmetry breaking, while nonlinear circular dichroism is commonly viewed as a resonantly enhanced manifestation of an already chiral linear response. Here, we demonstrate a different mechanism: chirality induced solely by the nonlinear susceptibility tensor of an otherwise achiral...

166. Driving dielectric metasurfaces by complex-frequency excitation

Hao Wu (UNSW Canberra)

09/12/2026, 11:30

ANZOS | Photonics and Optics (ANZCOP)

Contributed Oral

Complex-frequency excitation provides a powerful tool for controlling resonant scattering by tailoring not only the carrier frequency but also the temporal growth or decay rate of the incident waveform. In this work, we investigate complex-frequency excitations in dielectric metasurfaces that support quasi-bound states in the continuum (quasi-BIC). Instead of relying solely on conventional...

292. Symmetry effects in metasurface chirality

Ivan Toftul (Australian National University)

09/12/2026, 11:45

ANZOS | Photonics and Optics (ANZCOP)

Contributed Oral

Chirality, fundamentally defined by a lack of mirror symmetry, manifests in light-matter interactions as optical chirality — a differential response to circularly polarized light. Metasurfaces offer an efficient, subwavelength platform for engineering these effects. We establish a definitive link between the structural geometry of a dielectric metasurface and its optical chirality across...

138. Nonlinear chiral metasurfaces

Pavel Tonkaev (The Australian National University)

09/12/2026, 12:00

ANZOS | Photonics and Optics (ANZCOP)

Contributed Oral

Chiral photonics enables control over the handedness of light and underpins applications ranging from optical communications and biochemical sensing to emerging quantum technologies. While most existing approaches focus on engineering strong linear optical activity, nonlinear chiral phenomena remain comparatively underexplored. Here, we demonstrate a fundamentally different route in which a...

445. Quantum Non-Reciprocity in Photon-Pair Generation from Nonlinear Metasurfaces

Mr Xiwen Qiu (Australian National University)

09/12/2026, 12:15

ANZOS | Photonics and Optics (ANZCOP)

Contributed Oral

Quantum non-reciprocity, in which quantum-state evolution or photon transport depends on the excitation direction, provides a powerful mechanism for controlling quantum information flow, suppressing back-propagating noise, and preserving coherence in quantum technologies [1]. However, most experimentally demonstrated quantum non-reciprocal effects retain classical analogues [2]. It remained an...