Strong violations of Bell-type inequalities for path-entangled number states

Journal Article · Thu Nov 15 00:00:00 EST 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.052101· OSTI ID:21027945

Wildfeuer, Christoph F; Dowling, Jonathan P ^[1]; Lund, Austin P ^[2]

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1. Hearne Institute for Theoretical Physics, Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803 (United States)
2. Centre for Quantum Computer Technology, Department of Physics, University of Queensland, Brisbane 4072, QLD (Australia)

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.

• OSTI ID: 21027945
• Journal Information: Physical Review. A, Vol. 76, Issue 5; Other Information: DOI: 10.1103/PhysRevA.76.052101; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BELL THEOREM
CLEBSCH-GORDAN COEFFICIENTS
PHOTONS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS