1310-nm quantum key distribution system with up-conversion pump wavelength at 1550 nm
作者： Hai Xu , Lijun Ma , Alan Mink , Barry Hershman , Xiao Tang
DOI: 10.1364/OE.15.007247
关键词:
摘要: We show that the performance of a 1310-nm quantum key distribution (QKD) system with up-conversion detectors pumped at 1550 nm is comparable or better than current 1550-nm QKD systems pump shorter wavelength. The nonlinearly-induced dark counts are reduced when wavelength light longer signal. have developed detector for system, and we experimentally study polarization sensitivity, pump-signal format, various influences on count rate. Using this in proof-of-principle experiment, achieved secure rate 500 kbit/s 10 km 9.1 50 625-MHz, B92, polarization-coding expect could be improved further.
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