Entanglement formation and violation of Bell's inequality with a semiconductor single photon source

被引：115

作者：

Fattal, D ^{[1
]}

Inoue, K

Vuckovic, J

Santori, C

Solomon, GS

Yamamoto, Y

机构：

[1] Stanford Univ, Ginzton Lab, ICORP,JST, Quantum Entanglement Project, Stanford, CA 94305 USA

[2] NTT Corp, Basic Res Labs, Kanagawa, Japan

[3] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo, Japan

[4] Stanford Univ, Solid State Photon Lab, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.92.037903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the generation of polarization-entangled photons, using a quantum dot single photon source, linear optics, and photodetectors. Two photons created independently are observed to violate Bell's inequality. The density matrix describing the polarization state of the postselected photon pairs is reconstructed and agrees well with a simple model predicting the quality of entanglement from the known parameters of the single photon source. Our scheme provides a method to create no more than one entangled photon pair per cycle after postselection, a feature useful to enhance quantum cryptography protocols based on shared entanglement.

引用

页码：4 / 379034

页数：4

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