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Analysis of the one-decoy-state SARG04 quantum cryptography protocol in the presence of afterpulse effects
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作者 Hu Nian ya-feng nie +1 位作者 Chun-Mei Zhang Liang-Liang Lu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2024年第6期66-71,共6页
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 analys... 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. 展开更多
关键词 Quantum key distribution SARG04 protocol one decoy afterpulse
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