Physical Review Letters

Observation of Two-Photon Speckle Patterns

Wouter H. J. Peeters, J. J. D. Moerman, Martin P. van Exter

Published Apr 27, 2010• 87 citations

Abstract

We report the observation of speckle patterns in quantum correlations within light that is scattered by a disordered medium. The random medium is illuminated with spatially entangled photon pairs, and fourth-order speckle patterns are spatially resolved by two independently scanning detectors. Spatial entanglement gives two-photon speckle a much richer structure than ordinary one-photon speckle. Our experiments demonstrate that two-photon speckle from a surface scatterer and a volume scatterer look entirely different.

DOI: 10.1103/physrevlett.104.173601

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