Separability, entanglement, and full families of commuting normal matrices

被引：17

作者：

Samsonowicz, Jan

Kus, Marek

Lewenstein, Maciej

机构：

[1] Warsaw Univ Technol, Fac Math & Informat Sci, PL-0061 Warsaw, Poland

[2] Polish Acad Sci, Ctr Theoret Phys, PL-02668 Warsaw, Poland

[3] ICREA, Inst Ciencies Foton, Castelldefels 08860, Spain

[4] ICFO, Inst Ciencies Foton, Castelldefels 08860, Spain

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.76.022314

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We reduce the question of whether a given quantum mixed state is separable or entangled to the problem of existence of a certain full family of commuting normal matrices whose matrix elements are partially determined by components of the pure states constituting a decomposition of the considered mixture. The method reproduces many known entanglement and/or separability criteria, and provides yet another geometrical characterization of mixed separable states.

引用

页数：11

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