Distinguishing four photons in an entangled state from two independent pairs of photons

被引：28

作者：

Ou, ZY ^{[1
]}

机构：

[1] Indiana Univ Purdue Univ, Dept Phys, Indianapolis, IN 46202 USA

来源：

PHYSICAL REVIEW A | 2005年 / 72卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.72.053814

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analyze in a multimode model a recent scheme [Tsujino , Phys. Rev. Lett. 92, 153602 (2004)] to distinguish entangled four-photon polarization state from two independent polarization entangled pairs of photons in a single type-II parametric down-conversion process. The fraction of the four-photon entangled state among the two detected photon pairs is found to be related to a quantity that is responsible for the temporal mode match between the photon pairs. A comparison with the single mode models is discussed. (c) 2005 American Institute of Physics.

引用

页数：6

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