Entropy product measure for multipartite pure states

被引：0
作者：
Wancang Cao
Dan Liu
Feng Pan
Guilu Long
机构：
[1] Chifeng College,Department of Physics
[2] Tsinghua University,Key Laboratory for Quantum Information and Measurements, Department of Physics
[3] Liaoning Normal University,Department of Physics
[4] Tsinghua University,Key Laboratory for Atomic and Molecular Nano
来源：
Science in China Series G: Physics, Mechanics and Astronomy | 2006年 / 49卷
关键词：
multipartite pure state; von Neumann entropy; entanglement measure;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An entanglement measure for multipartite pure states is formulated using the product of the von Neumann entropy of the reduced density matrices of the constituents. Based on this new measure, all possible ways of the maximal entanglement of the triqubit pure states are studied in detail and all types of the maximal entanglement have been compared with the result of ‘the average entropy’. The new measure can be used to calculate the degree of entanglement, and an improvement is given in the area near the zero entropy.
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页码：606 / 615
页数：9
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