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

被引：116

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

来源：

OPTICS LETTERS | 2004年 / 29卷 / 23期

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

页码：2797 / 2799

页数：3

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