Multiple Entropy Measures for Multi-particle Pure Quantum State

被引：21

作者：

Liu Dan ^{[1
,2
,3
]}

Zhao Xin ^{[2
,3
]}

Long Gui-Lu ^{[1
,2
,3
,4
]}

机构：

[1] Dalian Nationalities Univ, Sch Sci, Dalian 116600, Peoples R China

[2] Tsinghua Univ, Key Lab Atom & Mol NanoSci, Beijing 100084, Peoples R China

[3] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[4] Tsinghua Univ, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2010年 / 54卷 / 05期

基金：

中国国家自然科学基金;

关键词：

MEMS; entanglement measure; multiple entropy measures; ENTANGLEMENT; PURIFICATION;

D O I：

10.1088/0253-6102/54/5/09

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose to use a set of averaged entropies, the multiple entropy measures (MEMS), to partially quantify quantum entanglement of multipartite quantum state. The MEMS is vector-like with m = [N/2] components: [S1, S2, ..., Sm], and the i-th component S-i is the geometric mean of i-qubits partial entropy of the system. The S-i measures how strong an arbitrary i qubits from the system are correlated with the rest of the system. It satisfies the conditions for a good entanglement measure. We have analyzed the entanglement properties of the GHZ-state, the W-states, and cluster-states under MEMS.

引用

页码：825 / 828

页数：4

共 53 条

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