Dr Shields's photon detector, however, permits cryptographers to use a phenomenon called quantum entanglement to make a repeater that does not destroy quantum states.
Weighed Orthogonal Matched Filter detector which is considered as a novel linear multi-user detector is presented by using the ideas from quantum signal processing.
本文通过借鉴量子信号处理的思想，给出了一种新的线性多用户检测器：加权正交匹配滤波检测器。
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Firstly, based on the analysis of some implementations of BB84 protocol, we developed a scheme of quantum key distribution by using polarization encoding and only one single photon detector.