Physical Review A

Simultaneous observation of correlations in position-momentum and polarization variables

Marcelo Pereira de Almeida, Stephen Patrick Walborn, P. H. Souto Ribeiro

Published Apr 18, 2006• 6 citations

Abstract

We demonstrate experimentally that it is possible to prepare and detect photon pairs created by spontaneous parametric downconversion which exhibit simultaneous position-momentum and polarization correlations. We discuss the use of these correlations in several four-dimensional key distribution protocols.

DOI: 10.1103/physreva.73.040301

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