Continuous operation of a one-way quantum key distribution system over installed telecom fibre
Continuous operation of a one-way quantum key distribution system over installed telecom fibre
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DOI：
10.1364/opex.13.000660
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发表时间：
2005-01-24
期刊：
影响因子：
3.8
通讯作者：
Shields, AJ
中科院分区：
文献类型：
--
作者：
Yuan, ZL;Shields, AJ
我们展示了一个强大的，紧凑的和自动化的量子密钥分配系统，基于一个单向马赫-曾德尔干涉仪，这是积极补偿的光子相位和偏振的时间漂移。该系统提供了一个上级性能的被动补偿方案，平均量子比特错误率为0.87%，占空比为99.6%的连续量子密钥分配会话的19个小时超过20.3公里安装的电信光纤。结果表明，主动补偿QKD系统是适合实际应用的。(C)2005年，美国光学学会。
We demonstrate a robust, compact and automated quantum key distribution system, based upon a one-way Mach-Zender interferometer, which is actively compensated for temporal drifts in the photon phase and polarization. The system gives a superior performance to passive compensation schemes with an average quantum bit error rate of 0.87% and a duty cycle of 99.6% for a continuous quantum key distribution session of 19 hours over a 20.3 km installed telecom fibre. The results suggest that actively compensated QKD systems are suitable for practical applications. (C) 2005 Optical Society of America.