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    • 83. 发明公开
    • PHASE REFERENCE SHARING SCHEMES FOR CONTINUOUS-VARIABLE QUANTUM CRYPTOGRAPHY
    • 连续变量量子密码的相参考共享方案
    • EP3244566A1
    • 2017-11-15
    • EP16305551.0
    • 2016-05-11
    • Institut Mines-Telecom
    • ALLEAUME, RomainMARIE, Adrien
    • H04L9/08
    • There are disclosed systems and associated methods of performing coherent optical communication of quantum information between an emitter A and a distant receiver B, using a local local oscillator (LLO). Examples of LLO-based Continuous-Variable Quantum Key Distribution (CV-QKD) are described. Self-coherent schemes are used, said schemes consisting in deriving both signal and phase reference pulses from the same optical pulse thus ensuring an intrinsic strong signal to reference phase coherence. Different CV-QKD designs implementing various self-coherence phase sharing schemes are described and compared in terms of secret key rate and hardware requirements. Strong phase noise resilience can be obtained with standard telecom equipment such as low cost lasers.
    • 公开了使用本地本地振荡器(LLO)在发射器A和远程接收器B之间执行量子信息的相干光通信的系统和相关方法。 描述了基于LLO的连续变量量子密钥分配(CV-QKD)的例子。 使用自相干方案,所述方案包括从相同光脉冲导出信号和相位参考脉冲,从而确保对参考相位相干的固有强信号。 描述了不同的CV-QKD设计,实现了各种自相干相位共享方案,并根据密钥速率和硬件要求进行了比较。 标准电信设备(如低成本激光器)可获得较强的相位噪声抵御能力。