Correlation-based entanglement criterion in bipartite multiboson systems

被引：6

作者：

Laskowski, Wieslaw ^{[1
]}

Markiewicz, Marcin ^{[1
,2
]}

Rosseau, Danny ^{[3
]}

Byrnes, Tim ^{[3
,4
,5
]}

Kostrzewa, Kamil ^{[1
]}

Kolodziejski, Adrian ^{[1
]}

机构：

[1] Univ Gdansk, Inst Theoret Phys & Astrophys, PL-80952 Gdansk, Poland

[2] Univ Warsaw, Fac Phys, PL-02093 Warsaw, Poland

[3] Natl Inst Informat, Chiyoda Ku, Tokyo 1018430, Japan

[4] NYU, Shanghai 200122, Peoples R China

[5] NYU Shanghai, NYU ECNU Inst Phys, Shanghai 200062, Peoples R China

来源：

PHYSICAL REVIEW A | 2015年 / 92卷 / 02期

关键词：

SINGLE-PHOTON; ATOM-CHIP; QUANTUM; NONLOCALITY; PARTICLES;

D O I：

10.1103/PhysRevA.92.022339

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe a criterion for the detection of entanglement between two multiboson systems. The criterion is based on calculating correlations of Gell-Mann matrices with a fixed boson number on each subsystem. This applies naturally to systems such as two entangled spinor Bose-Einstein condensates. We apply our criterion to several experimentally motivated examples, such as (SSz)-S-z entangled BECs, ac-Stark-shift-induced two-mode squeezed BECs, and photons under parametric down-conversion. We find that entanglement can be detected for all parameter regions for the most general criterion. Alternative criteria based on a similar formalism are also discussed together with their merits.

引用

页数：8

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