Optimality of entanglement witnesses constructed from arbitrary permutations

被引：7

作者：

Qi, Xiaofei ^{[1
]}

Hou, Jinchuan ^{[2
]}

机构：

[1] Shanxi Univ, Dept Math, Taiyuan 030006, Peoples R China

[2] Taiyuan Univ Technol, Dept Math, Taiyuan 030024, Peoples R China

来源：

QUANTUM INFORMATION PROCESSING | 2015年 / 14卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Entanglement witnesses; Optimality; Bipartite quantum systems; Permutations;

D O I：

10.1007/s11128-015-1007-z

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The optimality of a class of entanglement witnesses constructed from any permutation for any bipartite systems is investigated. A necessary and sufficient condition is presented for such entanglement witnesses to be optimal, and thus, a class of optimal entanglement witnesses constructed by permutations is obtained.

引用

页码：2499 / 2515

页数：17

共 46 条

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