首页|Analysis of the one-decoy-state SARG04 quantum cryptography protocol in the presence of afterpulse effects
Analysis of the one-decoy-state SARG04 quantum cryptography protocol in the presence of afterpulse effects
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The SARG04 quantum key distribution protocol can offer greater robustness against photon number splitting attacks than the BB84 protocol that is implemented with weak pulses.In this paper,we propose a tight key analysis for the SARG04 protocol,by considering the one-decoy method and investigating its performance under the influence of a detector afterpulse.Our results demonstrate that an increase in block size leads to a slight increase in both the secure key rate and the maximum transmission distance.Importantly,the detector afterpulse plays a crucial role in practical applications and has a more pronounced effect on the SARG04 protocol compared to the BB84 protocol.
Key Laboratory of Optoelectronic Technology of Jiangsu Province,School of Physical Science and Technology,Nanjing Normal University,Nanjing 210023,China
Institute of Quantum Information and Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
Hefei National Laboratory,Hefei 230088,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of China
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