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1. 发明公开

EP4228174A1 JOINT CLASSICAL AND QUANTUM OPTICAL COMMUNICATIONS 审中-实审
公开(公告)号：EP4228174A1
公开(公告)日：2023-08-16
申请号：EP22305158.2
申请日：2022-02-11
申请人： Institut Mines Telecom
发明人： ALLEAUME, Romain , JAOUEN, Yves , AYMERIC, Raphaël
IPC分类号： H04B10/64 , H04B10/70
摘要： Optical communication method (600) comprising: - modulating (E606) an optical carrier (OC) by both first (RF q ) and second (RF c ) electrical signals to provide an optical dual signal (S) comprising quantum (S q ) and classical (S c ) signals, first (D q ) and second (D c ) data being encoded in the first and second signals respectively; - transmitting (E608) and receiving (E610) said dual optical signal (S) to and from an optical propagation medium (120); - extracting (E612) the first and second signals from the received dual signal; - compensating in the extracted first signal (RF' q ) and from the extracted second signal (RF' c ) : a frequency mismatch (Δf) between a central frequency of the optical quantum signal and a local oscillator optical wave (LO); a phase mismatch (Δϕ) between the optical carrier and the local oscillator wave; - decoding the first and second data from the compensated first signal and the extracted second signal respectively.

2. 发明授权

EP3244566B1 PHASE REFERENCE SHARING SCHEMES FOR CONTINUOUS-VARIABLE QUANTUM CRYPTOGRAPHY 有权转让
公开(公告)号：EP3244566B1
公开(公告)日：2020-08-05
申请号：EP16305551.0
申请日：2016-05-11
申请人： Institut Mines Telecom
发明人： ALLEAUME, Romain , MARIE, Adrien
IPC分类号： H04L9/08

3. 发明公开

EP3244566A1 PHASE REFERENCE SHARING SCHEMES FOR CONTINUOUS-VARIABLE QUANTUM CRYPTOGRAPHY 有权转让
标题翻译：连续变量量子密码的相参考共享方案
公开(公告)号：EP3244566A1
公开(公告)日：2017-11-15
申请号：EP16305551.0
申请日：2016-05-11
申请人： Institut Mines-Telecom
发明人： ALLEAUME, Romain , MARIE, Adrien
IPC分类号： H04L9/08
摘要： 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.
摘要翻译：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。

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