The influence of non-imaging detector design on heralded ghost-imaging and ghost-diffraction examined using a triggered ICCD came

Tasca, D.S., Aspden, R.S., Morris, P.A., Anderson, G., Boyd, R.W. and Padgett, M.J. (2013) The influence of non-imaging detector design on heralded ghost-imaging and ghost-diffraction examined using a triggered ICCD came. Optics Express, 21(25), pp. 30460-30473. (doi: 10.1364/OE.21.030460)

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Abstract

Ghost imaging and ghost diffraction can be realized by using the spatial correlations between signal and idler photons produced by spontaneous parametric down-conversion. If an object is placed in the signal (idler) path, the spatial correlations between the transmitted photons as measured by a single, non-imaging, “bucket” detector and a scanning detector placed in the idler (signal) path can reveal either the image or diffraction pattern of the object, whereas neither detector signal on its own can. The details of the bucket detector, such as its collection area and numerical aperture, set the number of transverse modes supported by the system. For ghost imaging these details are less important, affecting mostly the sampling time required to produce the image. For ghost diffraction, however, the bucket detector must be filtered to a single, spatially coherent mode. We examine this difference in behavour by using either a multi-mode or single-mode fibre to define the detection aperture. Furthermore, instead of a scanning detector we use a heralded camera so that the image or diffraction pattern produced can be measured across the full field of view. The importance of a single mode detection in the observation of ghost diffraction is equivalent to the need within a classical diffraction experiment to illuminate the aperture with a spatially coherent mode.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Boyd, Professor Robert and Padgett, Professor Miles and Tasca, Dr Daniel and MORRIS, PETER and Aspden, Mr Reuben
Authors: Tasca, D.S., Aspden, R.S., Morris, P.A., Anderson, G., Boyd, R.W., and Padgett, M.J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN:1094-4087
ISSN (Online):1094-4087
Published Online:04 December 2013
Copyright Holders:Copyright © 2013 The Authors
First Published:First published in Optics Express 21(25):30460-30473
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