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

Qi-Hang LU、Fang-Xiang WANG、Wei CHEN、Hai-Yang FU、Yin-Jie LU、Shuang WANG、De-Yong HE、Zhen-Qiang YIN、Guang-Can GUO、Zheng-Fu HAN

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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

623714376227146362171424KY24700000062021ZD0300701202103a13010002

2024

中国科学:信息科学(英文版)
中国科学院

中国科学:信息科学(英文版)

CSTPCDEI
影响因子:0.715
ISSN:1674-733X
年,卷(期):2024.67(4)
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