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IEEE/LEOS Winter Topical Meeting Series

Testing realism using entangled or hyper-entangled states made with a fiber-based two-photon source

Jingyun Fan, Alan L. Migdall

Published Jan 1, 2008• 0 citations
Publisher

Abstract

We describe the creation and characterization of entangled or hyper-entangled quantum states using a fiber-based two-photon source. We use these entangled states to study local- and non-local realism.
DOI
10.1109/leoswt.2008.4444407

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We present a parametric source which allows the engineering of polarization-momentum hyper- entangled two photon states based on linear optics and a single type-I nonlinear crystal. The nonlocal character of these states has been verified by various tests, including the All Versus Nothing test of local realism (A. Cabello, Phys. Rev. Lett. 87 , 010403 (2001)), which represents a generalization of the GHZ to the case of two entangled particles and two observers. We have also created a complete and deterministic Bell-state measure- ment by a novel experimental scheme which adopts polarization-momentum hyper-entanglement and requires linear optics and single photon detectors.