Quantum image distillation

Defienne, H. , Reichert, M., Fleischer, J. W. and Faccio, D. (2019) Quantum image distillation. Science Advances, 5(10), eaax030. (doi: 10.1126/sciadv.aax0307)

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Imaging with quantum states of light promises advantages over classical approaches in terms of resolution, signal-to-noise ratio, and sensitivity. However, quantum detectors are particularly sensitive sources of classical noise that can reduce or cancel any quantum advantage in the final result. Without operating in the single-photon counting regime, we experimentally demonstrate distillation of a quantum image from measured data composed of a superposition of both quantum and classical light. We measure the image of an object formed under quantum illumination (correlated photons) that is mixed with another image produced by classical light (uncorrelated photons) with the same spectrum and polarization, and we demonstrate near-perfect separation of the two superimposed images by intensity correlation measurements. This work provides a method to mix and distinguish information carried by quantum and classical light, which may be useful for quantum imaging, communications, and security.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Defienne, Dr Hugo and Faccio, Professor Daniele
Authors: Defienne, H., Reichert, M., Fleischer, J. W., and Faccio, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Science Advances
Publisher:American Association for the Advancement of Science
ISSN (Online):2375-2548
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Science Advances 5(10):eaax030
Publisher Policy:Reproduced under a Creative Commons License
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
6672319UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/M01326X/1S&E P&A - PHYSICS & ASTRONOMY