Measuring the entanglement of bipartite pure states

被引：45

作者：

Sancho, JMG

Huelga, SF

机构：

[1] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Opt Sect, London SW7 2BZ, England

来源：

PHYSICAL REVIEW A | 2000年 / 61卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.61.042303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The problem of the experimental determination of the amount of entanglement of a bipartite pure state is addressed. We show that measuring a Single observable does nor suffice to determine the entanglement of a given unknown pure state of two particles. Possible minimal local measuring strategies are discussed, and a comparison is made on the basis of their best achievable precision.

引用

页数：7

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