Separability of mixed states: Necessary and sufficient conditions

被引：3269

作者：

Horodecki, M

Horodecki, P

Horodecki, R

机构：

[1] GDANSK TECH UNIV,FAC APPL PHYS & MATH,PL-80952 GDANSK,POLAND

[2] UNIV GDANSK,INST THEORET PHYS & ASTROPHYS,PL-80952 GDANSK,POLAND

来源：

PHYSICS LETTERS A | 1996年 / 223卷 / 1-2期

关键词：

D O I：

10.1016/S0375-9601(96)00706-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We provide necessary and sufficient conditions for the separability of mixed states. As a result we obtain a simple criterion of the separability for 2 x 2 and 2 x 3 systems. Here, the positivity of the partial transposition of a state is necessary and sufficient for its separability. However, this is not the case in general. Some examples of mixtures which demonstrate the utility of the criterion are considered.

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页码：1 / 8

页数：8

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