Matched witness for multipartite entanglement

被引：17

作者：

Chen, Xiao-yu ^{[1
]}

Jiang, Li-zhen ^{[1
]}

Xu, Zhu-an ^{[2
]}

机构：

[1] Zhejiang Gongshang Univ, Coll Informat & Elect Engn, Hangzhou 310018, Zhejiang, Peoples R China

[2] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

来源：

QUANTUM INFORMATION PROCESSING | 2017年 / 16卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Entanglement witness; Separable criterion; Cluster state; GHZ state; SEPARABILITY; CRITERION; STATES;

D O I：

10.1007/s11128-017-1529-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Entanglement criteria for multipartite entangled states are obtained by matching witnesses to multipartite entangled states. The necessary and sufficient criterion of separability for three qubit X states is given as an example to illustrate the procedure of finding a criterion. The result is utilized to obtain the noise tolerance of W state. The necessary and sufficient criteria of three partite separability and full separability for four qubit noisy cluster states, three partite separability for four qubit noisy GHZ states are obtained.

引用

页数：22

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