arXiv:quant-ph/0602150 · Physical Review A

Tomographic test of Bell’s inequality for a time-delocalized single photon

Milena D’Angelo, Alessandro Zavatta, Valentina Parigi, Marco Bellini

Published Nov 29, 2006• 37 citations

Abstract

Time-domain balanced homodyne detection is performed on two well-separated temporal modes sharing a single photon. The reconstructed density matrix of the two-mode system is used to prove and quantify its entangled nature, while the Wigner function is employed for an innovative tomographic test of Bell's inequality based on the theoretical proposal by Banaszek and Wodkiewicz [Phys. Rev. Lett. 82, 2009 (1999)]. Provided some auxiliary assumptions are made, a clear violation of the Banaszek-Bell inequality is found.

DOI: 10.1103/physreva.74.052114

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