Technique - (2) Quantum imaging with undetected photons (QIUP)

Type: Experimental

Description: Mid-infrared sensing using entangled photon pairs where the signal photon is never detected; SU(1,1) interferometry.

Chris Phillips 🔗
Imperial College London 🔗
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Department(s)/lab(s): Physics | Quantum Imaging Group (Digistain) @ Imperial
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Phillips works on quantum imaging (entangled/twin-photon imaging at the quantum limit) and label-free mid-infrared spectroscopic biomedical imaging; he co-founded Digistain, a spin-out applying infrared spectroscopic histopathology to rapid cancer diagnostics.

John Rarity 🔗
University of Bristol 🔗
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Department(s)/lab(s): Electrical Engineering / Physics / QET Labs | Rarity Group @ Bristol
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John Rarity's group works on quantum-enhanced measurements and free-space quantum key distribution. Research: (1) quantum imaging with undetected photons — mid-infrared gas sensing (CO2, CH4) exploiting entangled photon pairs, with only near-IR photons detected (startup QLM); (2) sub-shot-noise imaging using quantum-identical photon beams; (3) spin-photon interfaces (1D cavity with near-unit scattering efficiency); (4) compact satellite QKD transmitters (EPSRC Quantum Comms Hub). Highly relevant to quantum-enhanced sensing.