Separability of Generalized Graph Product States

被引：3

作者：

Zhao Hui ^{[1
]}

Fan Jiao ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2013年 / 30卷 / 09期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

DENSITY-MATRIX; ENTANGLEMENT; GENERATION; LAPLACIAN;

D O I：

10.1088/0256-307X/30/9/090303

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We construct two classes of generalized graph product states and study the entanglement of these states. It is first presented that the density matrices of complex edge-weighted digraphs associated with the generalized graph product in m circle times n systems are positive partial transformation and separable states. Then we prove that the density matrices of the vertex-weighted digraphs associated with another generalized graph product are entangled states.

引用

页数：4

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