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    • 1. 发明申请
    • Fast bit-error rate calculation mode for QKD systems
    • QKD系统的快速误码率计算模式
    • US20100241912A1
    • 2010-09-23
    • US11397772
    • 2006-04-04
    • Brandon KwokA. Craig BealAudrius BerzanskisWensheng Sun
    • Brandon KwokA. Craig BealAudrius BerzanskisWensheng Sun
    • G06F11/00
    • H04L9/0858
    • A fast bit-error rate (F-BER) calculation mode for a QKD system is disclosed, wherein the method includes establishing versions of a sifted key in respective sifted-bits (SB) buffers in respective QKD stations (Alice and Bob). The method also includes sending Alice's version of the sifted key to Bob, and Bob performing a comparison of the two sifted key versions. The number of bit errors between the two sifted key versions relative to the length of the sifted key yields the F-BER. The F-BER is calculated much more quickly than the conventional BER calculation (“N-BER”), which involves performing a relatively complex error-correction algorithm. The F-BER calculation mode is particularly useful in quickly setting up and/or calibrating a QKD system, and can be repeated quickly to provide updated BER measurements after each QKD system adjustment.
    • 公开了一种用于QKD系统的快速误码率(F-BER)计算模式,其中该方法包括在相应的QKD站(Alice和Bob)中的相应的筛选位(SB)缓冲器中建立筛选密钥的版本。 该方法还包括将筛选密钥的Alice版本发送给Bob,Bob执行两个筛选密钥版本的比较。 两个筛选密钥版本之间的相对于筛选密钥长度的位错误的数量产生了F-BER。 比传统的BER计算(“N-BER”)更快地计算出了F-BER,这涉及到执行相对复杂的纠错算法。 F-BER计算模式在快速设置和/或校准QKD系统中特别有用,并且可以在每个QKD系统调整后快速重复以提供更新的BER测量。