Multiple Entropy Measures for Multi-particle Pure Quantum State

被引：7

作者：

刘丹 ^{[1
,2
]}

赵鑫 ^{[2
]}

龙桂鲁 ^{[1
,2
,3
]}

机构：

[1] School of Science,Dalian Nationalities University

[2] Key Laboratory for Atomic and Molecular NanoSciences and Department of Physics,Tsinghua University

[3] Tsinghua National Laboratory for Information Science and Technology,Tsinghua University

来源：

CommunicationsinTheoreticalPhysics | 2010年 / 54卷 / 11期

基金：

中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;

关键词：

MEMS; entanglement measure; multiple entropy measures;

D O I：

暂无

中图分类号：

O431.2 [量子光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose to use a set of averaged entropies, the multiple entropy measures （MEMS）, to partiallyquantify quantum entanglement of multipartite quantum state.The MEMS is vector-like with m = [N/2] components:[S;, S;,..., S;], and the i-th component S;is the geometric mean of i-qubits partial entropy of the system.The S;measures how strong an arbitrary i qubits from the system are correlated with the rest of the system.It satisfies theconditions for a good entanglement measure.We have analyzed the entanglement properties of the GHZ-state, theW-states, and cluster-states under MEMS.

引用

页码：825 / 828

页数：4

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