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Quantum Walks of Correlated Photon Pairs in Two-Dimensional Waveguide Arrays

Quantum Walks of Correlated Photon Pairs in Two-Dimensional Waveguide Arrays We demonstrate quantum walks of correlated photons in a two-dimensional network of directly laser written waveguides coupled in a “swiss cross” arrangement. The correlated detection events show high-visibility quantum interference and unique composite behavior: strong correlation and independence of the quantum walkers, between and within the planes of the cross. Violations of a classically defined inequality, for photons injected in the same plane and in orthogonal planes, reveal nonclassical behavior in a nonplanar structure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Letters American Physical Society (APS)

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Publisher
American Physical Society (APS)
Copyright
© 2014 American Physical Society
Subject
LETTERS; Atomic, Molecular, and Optical Physics
ISSN
0031-9007
eISSN
1079-7114
DOI
10.1103/PhysRevLett.112.143604
pmid
24765962
Publisher site
See Article on Publisher Site

Abstract

We demonstrate quantum walks of correlated photons in a two-dimensional network of directly laser written waveguides coupled in a “swiss cross” arrangement. The correlated detection events show high-visibility quantum interference and unique composite behavior: strong correlation and independence of the quantum walkers, between and within the planes of the cross. Violations of a classically defined inequality, for photons injected in the same plane and in orthogonal planes, reveal nonclassical behavior in a nonplanar structure.

Journal

Physical Review LettersAmerican Physical Society (APS)

Published: Apr 10, 2014

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