Measuring multipartite concurrence with a single factorizable observable

被引：93

作者：

Aolita, Leandro

Mintert, Florian

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil

[2] Harvard Univ, Dept Phys, Cambridge, MA USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.97.050501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that, for any composite system with an arbitrary number of finite-dimensional subsystems, it is possible to directly measure the multipartite concurrence of pure states by detecting only one single factorizable observable, provided that two copies of the composite state are available. This result can be immediately put into practice in trapped-ion and entangled-photon experiments.

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页数：4

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