Enhanced realignment criterion vs linear entanglement witnesses

被引：10

作者：

Sarbicki, Gniewomir ^{[1
]}

Scala, Giovanni ^{[2
,3
]}

Chruscinski, Dariusz ^{[1
]}

机构：

[1] Nicolaus Copernicus Univ, Inst Phys, Fac Phys Astron & Informat, Grudziadzka 5-7, PL-87100 Torun, Poland

[2] Univ Bari, Dipartimento Interateneo Fis, I-70126 Bari, Italy

[3] Ist Nazl Fis Nucl, Sez Bari, I-70125 Bari, Italy

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2020年 / 53卷 / 45期

关键词：

entanglement detection; entanglement witness; enhanced realignment criterion; separability criteria; correlation tensor criteria; SEPARABILITY; STATES;

D O I：

10.1088/1751-8121/abba46

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is shown that the enhanced (nonlinear) realignment criterion is equivalent to the family of linear criteria based on correlation tensor. These criteria generalize the original (linear) realignment criterium and give rise to the family of entanglement witnesses. An appropriate limiting procedure is proposed which leads to a novel class of witnesses which are as powerful as the enhanced realignment criterion.

引用

页数：10

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