在已安装的电信光纤上单向量子密钥分发系统的连续运行。
Continuous operation of a one-way quantum key distribution system over installed telecom fibre.
作者信息
Yuan Zhiliang, Shields A
出版信息
Opt Express. 2005 Jan 24;13(2):660-5. doi: 10.1364/opex.13.000660.
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 20.3km installed telecom fibre. The results suggest that actively compensated QKD systems are suitable for practical applications.
我们展示了一种基于单向马赫-曾德尔干涉仪的强大、紧凑且自动化的量子密钥分发系统，该系统能主动补偿光子相位和偏振的时间漂移。对于在20.3公里已安装的电信光纤上进行的长达19小时的连续量子密钥分发会话，该系统的平均量子误码率为0.87%，占空比为99.6%，性能优于被动补偿方案。结果表明，主动补偿的量子密钥分发系统适用于实际应用。
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