9 v 1 9 N ov 1 99 9 Greenberger - Horne - Zeilinger paradoxes for multiport beam splitters
نویسندگان
چکیده
In a gedankenexperiment N particles in a generalised GHZ-type beam entangled state (each particle can be in one of M beams) are fed into N symmetric 2M-port beam splitters (spatially separated). Correlation functions for such a process (using the Bell numbers value assignment approach) reveal a remarkable symmetry. For N = M + 1 ≥ 4 a series of GHZ paradoxes are shown.
منابع مشابه
/ 99 10 04 5 v 1 1 1 O ct 1 99 9 Critical visibility for N - particle Greenberger - Horne - Zeilinger correlations to violate local realism
A sequence of Bell inequalities for N-particle systems, which involve three settings of each of the local measuring apparatuses, is derived. For GHZ 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 .
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Entanglement is Schrödinger’s name for superposition in a multi-particle system. In particular he called entangled states two-particle states that cannot be factored into products of two single-particle states in any representation. Multi-particle superposition is considered to be the characteristic trait of quantum mechanics [1]. If one cannot distinguish (even in principle) between different ...
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