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

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

2006-10-20

arxiv.org/abs/quant-ph/0610180v4

Phys. Rev. A 76, 052101 (2007)

Physics

Quantum Physics

6 pages, LaTex; revised version accepted for publication in PRA

Scientific paper

10.1103/PhysRevA.76.052101

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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