Quantum dense coding exploiting a bright Einstein-Podolsky-Rosen beam

被引：417

作者：

Li, XY ^{[1
]}

Pan, Q

Jing, JT

Zhang, J

Xie, CD

Peng, KC

机构：

[1] State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan, Peoples R China

[2] Shanxi Univ, Inst Optoelect, Taiyuan 030006, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.88.047904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Highly efficient quantum dense coding for continuous variables has been experimentally accomplished by means of exploiting a bright Einstein-Podolsky-Rosen (EPR) beam with anticorrelation of amplitude quadratures and correlation of phase quadratures. Two bits of classical information are encoded on two quadratures of a half of a bright EPR beam, then are simultaneously decoded by the other half of the EPR beam with the sensitivities beyond that of the shot noise limit. A high degree of immunity to unauthorized eavesdropping has been experimentally demonstrated.

引用

页码：4 / 479044

页数：4

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