EPR-based ghost imaging using a single-photon-sensitive camera

Aspden, R.S., Tasca, D.S., Boyd, R. and Padgett, M.J. (2013) EPR-based ghost imaging using a single-photon-sensitive camera. New Journal of Physics, 15(073032), (doi: 10.1088/1367-2630/15/7/073032)

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Correlated photon imaging, popularly known as ghost imaging, is a technique whereby an image is formed from light that has never interacted with the object. In ghost imaging experiments, two correlated light fields are produced. One of these fields illuminates the object, and the other field is measured by a spatially resolving detector. In the quantum regime, these correlated light fields are produced by entangled photons created by spontaneous parametric down-conversion. To date, all correlated photon ghost imaging experiments have scanned a single-pixel detector through the field of view to obtain spatial information. However, scanning leads to poor sampling efficiency, which scales inversely with the number of pixels, N, in the image. In this work, we overcome this limitation by using a time-gated camera to record the single-photon events across the full scene. We obtain high-contrast images, 90%, in either the image plane or the far field of the photon pair source, taking advantage of the Einstein–Podolsky–Rosen-like correlations in position and momentum of the photon pairs. Our images contain a large number of modes, >500, creating opportunities in low-light-level imaging and in quantum information processing.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles and Aspden, Mr Reuben and Boyd, Mr Robert
Authors: Aspden, R.S., Tasca, D.S., Boyd, R., and Padgett, M.J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:New Journal of Physics
Publisher:Institute of Physics Publishing Ltd.
ISSN (Online):1367-2630
Copyright Holders:Copyright © 2013 IOP Publishing Ltd and Deutsche Physikalische Gesellschaf
First Published:First published in New Journal of Physics 15(073032)
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
549871Challenges in Orbital Angular MomentumMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/I012451/1P&A - PHYSICS & ASTRONOMY