Entanglement and extreme spin squeezing

被引：367

作者：

Sorensen, AS ^{[1
]}

Molmer, K ^{[1
]}

机构：

[1] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.86.4431

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For any mean value of a Cartesian component of a spin vector we identify the smallest possible uncertainty in any of the orthogonal components. The corresponding states are optimal for spectroscopy and atomic clocks. We show that the results for different spin J can be used to identify entanglement and to quantify the depth of entanglement in systems with many particles. With the procedure developed in this Letter, collective spin measurements on an ensemble of particles can be used as an experimental proof of multiparticle entanglement.

引用

页码：4431 / 4434

页数：4

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