Spectral decomposition of Bell's operators for qubits

被引：118

作者：

Scarani, V ^{[1
]}

Gisin, N ^{[1
]}

机构：

[1] Univ Geneva, Appl Phys Grp, CH-1211 Geneva, Switzerland

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2001年 / 34卷 / 30期

关键词：

D O I：

10.1088/0305-4470/34/30/314

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spectral decomposition is given for the N-qubit Bell operators with two observables per qubit. It is found that the eigenstates (when non-degenerate) are N-qubit GHZ states even for those operators that do not allow the maximal violation of the corresponding inequality. We present two applications of this analysis. In particular, we discuss the existence of pare entangled states that do not violate the Mermin-Klyshko inequality for N greater than or equal to 3.

引用

页码：6043 / 6053

页数：11

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