Differential-phase-shift quantum key distribution experiment with a planar light-wave circuit Mach-Zehnder interferometer

被引:112
作者
Honjo, T [1 ]
Inoue, K
Takahashi, H
机构
[1] NTT Corp, Basic Res Labs, Atsugi, Kanagawa 2430198, Japan
[2] NTT Corp, Photon Labs, Atsugi, Kanagawa 2430198, Japan
关键词
D O I
10.1364/OL.29.002797
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A differential-phase-shift quantum key distribution experiment was carried out with a planar light-wave circuit (PLC) Mach-Zehnder interferometer. This scheme has two advantages: it requires no polarization control and has a high repetition frequency, provided that a stable interferometer is available. Stable polarization-insensitive operation was achieved with an interferometer fabricated by PLC technology. Raw key creation at a rate of 3076 bits/s with a 5.0% quantum bit-error rate was achieved over 20 km of fiber. The stability of the PLC interferometer was examined. (C) 2004 Optical Society of America.
引用
收藏
页码:2797 / 2799
页数:3
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