Countermeasure against blinding attack for single-photon detectors in quantum key distributionOA北大核心CSTPCDEI
Countermeasure against blinding attack for single-photon detectors in quantum key distribution
Quantum key distribution(QKD),rooted in quantum mechanics,offers information-theoretic security.However,practi-cal systems open security threats due to imperfections,notably bright-light blinding attacks targeting single-photon detectors.Here,we propose a concise,robust defense strategy for protecting single-photon detectors in QKD systems against blinding attacks.Our strategy uses a dual approach:detecting the bias current of the avalanche photodiode(APD)to defend against con-tinuous-wave blinding attacks,and monitoring the avalanche amplitude to protect against pulsed blinding attacks.By integrat-ing these two branches,the proposed solution effectively identifies and mitigates a wide range of bright light injection attempts,significantly enhancing the resilience of QKD systems against various bright-light blinding attacks.This method forti-fies the safeguards of quantum communications and offers a crucial contribution to the field of quantum information security.
Lianjun Jiang;Houlin Fang;Rui Ma;Lei Cheng;Weifeng Yang;Songtao Han;Shibiao Tang;Dongdong Li;Yuqiang Fang;Meisheng Zhao;Ming Liu;Zhilin Xie;Yukang Zhao;Yanlin Tang;Wei Jiang
QuantumCTek Co.,Ltd.,Hefei 230088,ChinaAnhui Armed Police Force,Hefei 230026,ChinaQuantumCTek Co.,Ltd.,Hefei 230088,China||Shandong Institute of Quantum Science and Technology Co.,Ltd.,Jinan 250101,China||QuantumCTek(Beijing)Co.,Ltd.,Beijing 100193,China||School of Electrical Engineering and Automation,Anhui University,Hefei 230601,ChinaQuantumCTek Co.,Ltd.,Hefei 230088,China||Shandong Institute of Quantum Science and Technology Co.,Ltd.,Jinan 250101,China||QuantumCTek(Beijing)Co.,Ltd.,Beijing 100193,ChinaQuantumCTek Co.,Ltd.,Hefei 230088,China||School of Cyber Science and Technology,University of Science and Technology of China,Hefei 230027,China
quantum key distributionsingle photon detectorblinding attackpulsed blinding attackcountermeasurequan-tum communication
《半导体学报（英文版）》 2024 (004)
77-82 / 6
This work was supported by the Major Scientific and Technological Special Project of Anhui Province(202103a13010004),the Major Scientific and Technological Special Project of Hefei City(2021DX007),the Key R&D Plan of Shandong Province(2020CXGC010105),and the China Post-doctoral Science Foundation(2021M700315).
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