Inseparable two spin-1/2 density matrices can be distilled to a singlet form

被引：357

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：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.78.574

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A quantum system is called inseparable if its density matrix cannot be written as a mixture of product states. In this Letter we apply the separability criterion, local filtering, and Bennett er al. distillation protocol [Phys. Rev. Lett. 76, 722 (1996)] to show that any inseparable 2 x 2 system represents the entanglement which, however small, can be distilled to a singlet form.

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页码：574 / 577

页数：4

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