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

Session

AIP QST: Diamond spin sensing & magnetometry

QST

8 Dec 2026, 14:30

Belinda Hutchinson Building (The University of Sydney )

87. High bandwidth magnetic sensing with a quantum heterodyne diamond sensor

Hamish Taylor (Monash University)

08/12/2026, 14:30

AIP | Quantum Science and Technology (QST)

Contributed Oral

Developing high bandwidth portable quantum sensors is of significant importance for both terrestrial and satellite communications. The nitrogen vacancy center in diamond is a popular quantum sensing platform for its relative simplicity and wide range of acceptable operating conditions, but suffers from a limited instantaneous bandwidth due to the narrow MHz-scale linewidth of the magnetic...

714. Quantum heterodyne techniques to enhance magnetometry capability using nitrogen-vacancy centres in diamond.

Michael Barson (Monash University)

08/12/2026, 14:45

AIP | Quantum Science and Technology (QST)

Contributed Oral

Non-linearity gives the capability to generate new frequencies of signals. Most commonly, the non-linear voltage-current relationship of a diode is used to perform radio-frequency mixing, where the sum, difference and harmonics of the frequencies of input electronic signals are obtained. Frequency mixing is a fundamental tool used in communications and sensing technology, both for receivers...

142. Towards Signal and Noise Engineering in Diamond Quantum Spin Readout

Harini Hapuarachchi (University of Sydney)

08/12/2026, 15:00

AIP | Quantum Science and Technology (QST)

Contributed Oral

Nitrogen-vacancy (NV) centres in diamond are key enablers of room-temperature quantum sensing and computing technologies already targeted for commercialisation by startups around the world (e.g., Quantum Brilliance, Phasor Quantum, Qnami). These technologies face two universal challenges: weak optical input and output spin-readout signals at nanoscale dimensions, and noise that degrades signal...

340. Laser-Threshold Magnetometry with Spin-1/2 and Spin-1 Quantum Sensors

Qiang Sun (Department of Physics, School of Science, RMIT University)

08/12/2026, 15:15

AIP | Quantum Science and Technology (QST)

Contributed Oral

Magnetic-field sensing provides a non-invasive way to probe currents, spins and magnetic materials. Quantum magnetic sensors are attractive for this task because atomic-scale spin systems can convert weak magnetic field changes into optical signals with high spatial resolution. A central challenge is that conventional optically detected spin sensors often rely on small fluorescence-contrast...