量子密钥分发中的零拍探测：BB84协议中光子计数的替代方案
Homodyne detection for quantum key distribution: an alternative to photon counting in BB84 protocol
摘要：
本文介绍了一个工作在1550 nm波长、采用BB84协议、QPSK信号的光纤QKD系统的原理和实验结果。我们的实验装置包括一个时间复用的超零差配置使用P.I.N探测器在差分方案作为替代雪崩光子计数。利用该检测方案进行了11km以上的光纤传输，并给出了噪声、量子效率和误码率等主要相关特性。
英文摘要：
This paper presents the principles and experimental results of an optical fiber QKD system operating at 1550 nm, and using the BB84 protocol with QPSK signals. Our experimental setup consists of a time-multiplexed super-homodyne configuration using P.I.N detectors in a differential scheme as an alternative to avalanche photon counting. Transmission over 11km of optical fiber has been done using this detection scheme and major relevant characteristics such as noise, quantum efficiency and bit error rate (BER) are reported.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
