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1. 发明申请

US20080037998A1 Polarization-Controlled Encoding Method, Encoder, And Quantum Key Distribution System 有权
标题翻译：极化控制编码方法，编码器和量子密钥分配系统
公开(公告)号：US20080037998A1
公开(公告)日：2008-02-14
申请号：US10588042
申请日：2004-08-19
申请人： Han Zhengfu , Bing Zhu , Xiaofan Mo , Guangcan Guo
发明人： Han Zhengfu , Bing Zhu , Xiaofan Mo , Guangcan Guo
IPC分类号： H04L9/08
CPC分类号： H04L9/0858
摘要： The invention relates to a polarization-controlled encoding method, encoder and quantum key distribution system, which is characterized in that polarization maintaining light path or 90 degree rotation Faraday mirror are used inside the encoder to keep the polarization of the output pulses same, and that in the quantum key distribution system employing the polarization-controlled encoder the pulse emitted from transmitter is unidirectional-transmitted to receiver and then quantum key distribution is implemented using interference in the pulses according to the quantum key distribution protocol. The quantum key distribution system using the polarization-controlled encoder of the invention has the ability of avoiding the wiretapping to transmitter, receiver and quantum channel. Detection units each of which separates reversed photon from other photons are added at the out port of the transmitter and the in port of receiver, respectively, so that Trojan horse is prevented from entering and photons with phase modulated information are prevented from leaving the safe area in receiver. Unconditionally safe key distribution can be accomplished by using the quantum key distribution system of the invention.
摘要翻译：本发明涉及一种偏振控制编码方法，编码器和量子密钥分发系统，其特征在于在编码器内部使用偏振保持光路或90度旋转法拉第镜，以保持输出脉冲的极化相同，在使用偏振控制编码器的量子密钥分配系统中，从发射机发射的脉冲是单向传输到接收机，然后根据量子密钥分配协议在脉冲中使用干扰来实现量子密钥分配。使用本发明的偏振控制编码器的量子密钥分发系统具有避免对发射机，接收机和量子信道的窃听的能力。检测单元分别将反向光子与其他光子分离，分别在发射机的出口和接收机的入口端口分别加入，防止特洛伊木马进入，防止具有相位调制信息的光子离开安全区域在接收器。通过使用本发明的量子密钥分发系统可以实现无条件的安全密钥分发。

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