Violation of Bell's inequality with photons from independent sources

被引：66

作者：

Pittman, TB ^{[1
]}

Franson, JD ^{[1
]}

机构：

[1] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.90.240401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a violation of Bell's inequality using one photon from a parametric down-conversion source and a second photon from an attenuated laser beam. The two photons were entangled at a beam splitter using the postselection technique of Shih and Alley [Phys. Rev. Lett. 61, 2921 (1988)]. A quantum interference pattern with a visibility of 91% was obtained using the photons from these independent sources, as compared with a visibility of 99.4% using two photons from a central parametric down-conversion source.

引用

页数：4