Hardy's nonlocality for generalized n-particle GHZ states

被引：46

作者：

Cereceda, JL

机构：

[1] 28038 Madrid, C/Alto del León 8

来源：

PHYSICS LETTERS A | 2004年 / 327卷 / 5-6期

关键词：

GHZ state; Hardy's nonlocality proof; Bell inequality violation;

D O I：

10.1016/j.physleta.2004.06.004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this Letter we extend Hardy's nonlocality proof for two spin-1/2 particles [Phys. Rev. Lett. 71 (1993) 1665] to the case of n spin-1/2 particles configured in the generalized GHZ state. We show that, for all n greater than or equal to 3, any entangled GHZ state violates the Bell inequality associated with the Hardy experiment. This feature is important since it has been shown [Phys. Rev. Lett. 88 (2002) 210402] that, for all n odd, there are entangled GHZ states that do not violate any standard n-particle correlation Bell inequality. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：433 / 437

页数：5

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