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
收藏
页码：2499 / 2515
页数：17
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