The rapid measurement of quantum spatial correlations using a photon-number resolving camera

K. Roberts; O. Wolley; T. Gregory; M. J. Padgett

doi:10.1117/12.2691088

30 November 2023 The rapid measurement of quantum spatial correlations using a photon-number resolving camera

K. Roberts, O. Wolley, T. Gregory, M. J. Padgett

Proceedings Volume 12795, Quantum Technology: Driving Commercialisation of an Enabling Science IV; 1279504 (2023) https://doi.org/10.1117/12.2691088
Event: SPIE Photonex, 2023, Glasgow, United Kingdom

Abstract

Parametric down-conversion converts pump photons in pairs of correlated signal and idler photons. Even when pumped by a single-mode laser, the signal and idler photons are spread over several thousand spatial modes yet strongly correlated with each other in their position and transverse momentum. These correlations enable applications in imaging, sensing, communication, and optical processing. Here we show that, using a photon number resolving camera, spatial correlations can be observed after only a few 10s seconds measurement time. Photon number resolving camera technologies are likely to find wide use in quantum enhanced low-light imaging systems.

Citation Download Citation

K. Roberts, O. Wolley, T. Gregory, and M. J. Padgett "The rapid measurement of quantum spatial correlations using a photon-number resolving camera", Proc. SPIE 12795, Quantum Technology: Driving Commercialisation of an Enabling Science IV, 1279504 (30 November 2023); https://doi.org/10.1117/12.2691088

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KEYWORDS

Photons

Quantum correlations

Quantum numbers

Cameras

Quantum imaging

Crystals

Detector arrays

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