Engineering spatial correlations of entangled photon pairs by pump beam shaping

Boucher, P., Defienne, H. and Gigan, S. (2021) Engineering spatial correlations of entangled photon pairs by pump beam shaping. Optics Letters, 46(17), pp. 4200-4203. (doi: 10.1364/OL.425372) (PMID:34469974)

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The ability to engineer the properties of quantum optical states is essential for quantum information processing applications. Here, we demonstrate tunable control of spatial correlations between photon pairs produced by spontaneous parametric down-conversion, and measure them using an electron multiplying charge coupled device (EMCCD) camera. By shaping the spatial pump beam profile in a type-I collinear configuration, we tailor the spatial structure of coincidences between photon pairs entangled in high dimensions without effect on intensity. The results highlight fundamental aspects of spatial coherence and hold potential for the development of quantum technologies based on high-dimensional spatial entanglement.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Defienne, Dr Hugo
Authors: Boucher, P., Defienne, H., and Gigan, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN (Online):1539-4794
Published Online:21 July 2021
Copyright Holders:Copyright © 2021 Optical Society of America
First Published:First published in Optics Letters 46(17): 4200-4203
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
305457Adaptive Optics for Quantum CommunicationDaniele FaccioEuropean Commission (EC)840958P&S - Physics & Astronomy