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Strong Violations of Bell-type Inequalities for Path-Entangled Number States

Christoph F. Wildfeuer·Austin P. Lund·Jonathan P. Dowling
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Abstract

We show that nonlocal correlation experiments on the two spatially separated modes of a maximally path-entangled number state may be performed and lead to a violation of a Clauser-Horne Bell inequality for any finite photon number N. We present also 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 states. We test other Bell-type inequalities. Some are violated by a constant amount for any N.

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Christoph F. Wildfeuer, Austin P. Lund, Jonathan P. Dowling. 2007-09-24. Strong Violations of Bell-type Inequalities for Path-Entangled Number States. https://doi.org/10.1103/physreva.76.052101

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