Quantum cryptography

被引：113

作者：

Zbinden, H ^{[1
]}

Bechmann-Pasquinucci, H ^{[1
]}

Gisin, N ^{[1
]}

Ribordy, G ^{[1
]}

机构：

[1] Univ Geneva, Appl Phys Grp, CH-1211 Geneva 4, Switzerland

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 67卷 / 06期

关键词：

D O I：

10.1007/s003400050574

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

After a short introduction to classic cryptography we explain thoroughly how quantum cryptography works. We present then an elegant experimental realization based on a self-balanced interferometer with Faraday mirrors. This phase-coding setup needs no alignment of the interferometer nor polarization control, and therefore considerably facilitates the experiment. Moreover it features excellent fringe visibility. Next, we estimate the practical limits of quantum cryptography. The importance of the detector noise is illustrated and means of reducing it are presented. With present-day technologies maximum distances of about 70 km with bit rates of 100 Hz are achievable.

引用

页码：743 / 748

页数：6

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