Experimental study of high speed polarization-coding quantum key distribution with sifted-key rates over Mbit/s
作者： Xiao Tang , Lijun Ma , Alan Mink , Anastase Nakassis , Hai Xu
DOI: 10.1364/OE.14.002062
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摘要: We present a quantitative study of various limitations on quantum cryptographic systems operating with sifted-key rates over Mbit/s. The dead time silicon APDs not only limits the rate but also causes correlation between neighboring key bits. In addition to well-known count-rate dependent timing jitter in avalanche photo-diode (APD), faint laser sources, vertical cavity surface emission lasers (VCSELs) our system, induce significant amount data-dependent jitter. Both and are major limiting factors designing QKD beyond
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