Spatial multipartite entanglement and localization of entanglement

被引：14

作者：

Daems, D. ^{[1
]}

Cerf, N. J. ^{[1
]}

机构：

[1] Univ Libre Bruxelles, QuIC, Ecole Polytech, B-1050 Brussels, Belgium

来源：

PHYSICAL REVIEW A | 2010年 / 82卷 / 03期

关键词：

SEPARABILITY CRITERION; NONLINEAR-INTERACTIONS; STATES;

D O I：

10.1103/PhysRevA.82.032303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple model together with its physical implementation which allows one to generate multipartite entanglement between several spatial modes of the electromagnetic field. It is based on parametric down-conversion with N pairs of symmetrically tilted plane waves serving as a pump. The characteristics of this spatial entanglement are investigated in the cases of zero as well as nonzero phase mismatch. Furthermore, the phenomenon of entanglement localization in just two spatial modes is studied in detail and shown to result in an enhancement of the entanglement by a factor root N.

引用

页数：6

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