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报道了可光纤集成相干态量子身份认证实验系统。该系统采用偏振相干态的斯托克斯矢量作为量子信号载体,采用动态偏振控制器作为信号调制器,利用固有的相干态量子噪声保证系统的安全性。自行设计了脉冲激光驱动电路、微弱窄脉冲激光探测电路、信号同步模块,采用Socket网络通信程序在TCP/IP局域网中实现了量子保密通信所需要的经典通信。该相干态量子身份认证系统采用的运行密钥为12位,每个光脉冲包含40000个光子,传输速率达到8kbit/s,合法用户间误码率(BER)小于10-4。每传输一个比特信息,攻击者所能窃取的信息量I(Alice,Eve)<10-14bit。
Reported a coherent fiber quantum co-state authentication authentication system. The system uses a Stokes-like vector of polarization coherent state as a quantum signal carrier and a dynamic polarization controller as a signal modulator to ensure system safety by using inherent coherent state quantum noise. Designed pulse laser driver circuit, weak narrow pulse laser detection circuit, signal synchronization module, the use of Socket network communication program in the TCP / IP LAN to achieve the quantum communication required for the security of classical communications. The coherent state quantum authentication system uses 12 running keys, each light pulse contains 40,000 photons, the transmission rate reaches 8kbit / s, and the BER between legitimate users is less than 10-4. Every time a bit of information is transmitted, the amount of information that an attacker can steal I (Alice, Eve) <10-14bit.