Quantum cryptography with entangled photons

被引：770
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
收藏
页码：4729 / 4732
页数：4
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