Functional Bell inequalities can serve as a stronger entanglement witness than conventional Bell inequalities

被引：18
|
作者：
SenDe, A [1 ]
Sen, U [1 ]
Zukowski, M [1 ]
机构：
[1] Univ Gdansk, Inst Fiz Teoret & Astrofiz, PL-80952 Gdansk, Poland
来源：
PHYSICAL REVIEW A | 2002年 / 66卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.66.062318
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We consider a Bell inequality for a continuous range of settings of the apparatus at each site. This "functional" Bell inequality gives a better range of violation for generalized Greenberger, Home, and Zeilinger states. Also a family of N-qubit bound entangled states violate this inequality for N>5.
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页数：4
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