首页|Quantum key distribution over a mimicked dynamic-scattering channel
Quantum key distribution over a mimicked dynamic-scattering channel
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Free-space quantum key distribution(QKD)plays an important role in the global quantum network.However,free space channels suffer from the atmospheric turbulence and scattering effects of haze,fog,and dust,which significantly weaken the performance of QKD or even block the secure quantum link.Here,we prove the performance of QKD over a dynamic scattering channel can be enhanced significantly using a fast wavefront shaping technique.The system achieves on average 10-dB enhancement of quantum transmission efficiency and establishes a secure quantum link for QKD.Our work demonstrates the feasibility of QKD through free-space dynamic scattering channels and enhances the deployment capability of complex-channel QKD system.
quantum key distributionfree space channelchannel turbulencechannel scatteringwavefront shaping
CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China
CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China
Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China
国家自然科学基金国家自然科学基金国家自然科学基金中央高校基本科研业务费专项Innovation Program for Quantum Science and TechnologyPlan for Major Anhui Provincial Science and Technology Project