The entanglement purification for entangled multi-particle states

被引:3
作者
Ye, L [1 ]
Yao, CM
Guo, GC
机构
[1] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Quantum Informat, Hefei 230026, Peoples R China
[2] Anhui Univ, Dept Phys, Hefei 230039, Peoples R China
关键词
purification; POVM; entangled state;
D O I
10.1088/1464-4266/4/3/308
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present two purification schemes for nonmaximally entangled states. We first show that two parties, Alice and Bob, start with shared less-entangled three-particle states to probabilistically produce a three-particle Greenberger-Horne-Zeilinger state by Bell state measurements and positve operator valued measure (POVM) or a unitary transformation. Then, by a straightforward generalization of the schemes, the purification of a multi-particle entangled state can be realized.
引用
收藏
页码:215 / 217
页数:3
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