首页|Improved model on asynchronous measurement-device-independent quantum key distribution with realistic devices

Improved model on asynchronous measurement-device-independent quantum key distribution with realistic devices

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  • 万方数据
  • 维普
In principle,the asynchronous measurement-device-independent quantum key distribution(AMDI-QKD)can surpass the key rate capacity without phase tracking and phase locking.However,practical imperfections in sources or detections would dramatically depress its performance.Here,we present an improved model on AMDI-QKD to reduce the influence of these imperfections,including intensity fluctuation,the afterpulse effect,and the dead time of detectors.Furthermore,we carry out corresponding numerical simulations.Simulation results show that,by implementing our present work,it can have more than 100 km longer secure transmission distance and one order of magnitude enhancement in the key generation rate after 320 km compared with the standard method.Moreover,our model can still break the Pirandola-Laurenza-Ottaviani-Banchi(PLOB)bound even under realistic experimental conditions.

asynchronous measurement-device-independent quantum key distributionintensity fluctuationsafterpulsedead time

孙铭烁、张春辉、章睿、周星宇、李剑、王琴

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Institute of Quantum Information and Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China

Broadband Wireless Communication and Sensor Network Technology,Key Laboratory of Ministry of Education,Nanjing University of Posts and Telecommunications,Nanjing 210003,China

Changqing Oilfield Company Digital and Intelligent Business Division,China National Petroleum Corporation,Xi'an 710299,China

2024

10.1088/1674-1056/ad757a

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(11)