Phys. Rev. A 76, 052101 (2007) [6 pages]Strong violations of Bell-type inequalities for path-entangled number statesReceived 29 October 2006; revised 24 July 2007; published 6 November 2007 We show that nonlocal correlation experiments on the two spatially separated modes of a maximally path-entangled number state may be performed. They lead to a violation of a Clauser-Horne Bell inequality for any finite photon number N. We also present an analytical expression for the two-mode Wigner function of a maximally path-entangled number state and investigate a Clauser-Horne-Shimony-Holt Bell inequality for such a state. We test other Bell-type inequalities. Some are violated by a constant amount for any N. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.052101
DOI:
10.1103/PhysRevA.76.052101
PACS:
03.65.Ud, 42.50.Xa, 03.65.Wj, 03.67.Mn
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