Practical quantum imaging with undetected photons

• URL: http://arxiv.org/abs/2307.06225v1
• Date: Wed, 12 Jul 2023 15:17:26 GMT
• Title: Practical quantum imaging with undetected photons
• Authors: Emma Pearce (1), Nathan R. Gemmell (1), Jefferson Fl\'orez (1), Jiaye Ding (1), Rupert F. Oulton (1), Alex S. Clark (1 and 2), and Chris C. Phillips (1) ((1) Blackett Laboratory, Department of Physics, Imperial College London, (2) Quantum Engineering Technology Labs, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol)
• Abstract summary: We describe a compact, portable, and low-cost system that is able to image objects at IR wavelengths without an IR source or IR detector. This imaging with undetected photons (IUP) approach uses quantum interference and correlations between entangled photon pairs to transfer image information from the IR to the visible.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Infrared (IR) imaging is invaluable across many scientific disciplines, from material analysis to diagnostic medicine. However, applications are often limited by detector cost, resolution and sensitivity, noise caused by the thermal IR background, and the cost, portability and tunability of infrared sources. Here, we describe a compact, portable, and low-cost system that is able to image objects at IR wavelengths without an IR source or IR detector. This imaging with undetected photons (IUP) approach uses quantum interference and correlations between entangled photon pairs to transfer image information from the IR to the visible, where it can be detected with a standard silicon camera. We also demonstrate a rapid analysis approach to acquire both phase and transmission image information. These developments provide an important step towards making IUP a commercially viable technique.

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