公开(公告)号：US20190199523A1

公开(公告)日：2019-06-27

申请号：US16098829

申请日：2017-05-10

Applicant: INSTITUT MINES-TELECOM

Inventor： Romain ALLEAUME ,  Adrien MARIE

IPC: H04L9/08 ,  H04B10/70

Abstract: Systems and associated methods of performing coherent optical communication of quantum information between an emitter A and a distant receiver B are provided, using a local local oscillator. Examples of LLO-based Continuous-Variable Quantum Key Distribution are described. Self-coherent schemes are used, the 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.