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Phys. Rev. A 56, R1682–R1685 (1997)

Critical visibility for N-particle Greenberger-Horne-Zeilinger correlations to violate local realism

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Marek Żukowski and Dagomir Kaszlikowski
Instytut Fizyki Teoretycznej i Astrofizyki, Uniwersytet Gdański, PL-80-952 Gdańsk, Poland

Received 12 May 1997; published in the issue dated September 1997

A sequence of Bell inequalities for N-particle systems, which involve three settings of each of the local measuring apparatuses, is derived. For Greenberger-Horne-Zellinger states, quantum mechanics violates these inequalities by factors exponentially growing with N. The threshold visibilities of the multiparticle sinusoidal interference fringes, for which local realistic theories are ruled out, decrease as (2/3)N.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.56.R1682
DOI:
10.1103/PhysRevA.56.R1682
PACS:
03.65.Bz, 42.50.Dv, 89.70.+c