Quantum cryptography with entangled photons

被引：785

作者：

Jennewein, T

Simon, C

Weihs, G

Weinfurter, H

Zeilinger, A

机构：

[1] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria

[2] Univ Munich, Sekt Phys, D-80799 Munich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.84.4729

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By realizing a quantum cryptography system based on polarization entangled photon pairs we establish highly secure keys, because a single photon source is approximated and the inherent randomness of quantum measurements is exploited. We implement a novel key distribution scheme using Wigner's inequality to test the security of the quantum channel, and, alternatively, realize a variant of the BB84 protocol. Our system has two completely independent users separated by 360 m, and generates raw keys at rates of 400-800 bits/s with bit error rates around 3%.

引用

页码：4729 / 4732

页数：4

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