Quantum Key Distribution against Trojan Horse Attacks
CAI Qing-Yu1, LV Hua 1,2,3
1State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2Department of Physics, Hubei University of Technology, Wuhan 4300683Graduate University of the Chinese Academy of Sciences, Beijing 100049
Quantum Key Distribution against Trojan Horse Attacks
CAI Qing-Yu1;LV Hua 1,2,3
1State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2Department of Physics, Hubei University of Technology, Wuhan 4300683Graduate University of the Chinese Academy of Sciences, Beijing 100049
摘要Realistic experimental apparatus of quantum cryptography are imperfect, which may be utilized by a potential eavesdropper to eavesdrop on the communication. We show that quantum communication may be improved with quantum teleportation and entanglement swapping, which is robustly secure against the most general Trojan horse attacks. Our scheme is not an improvement of the communication apparatus, but the improvement of quantum communication protocol itself. We show that our modified schemes may be implemented with current technology.
Abstract：Realistic experimental apparatus of quantum cryptography are imperfect, which may be utilized by a potential eavesdropper to eavesdrop on the communication. We show that quantum communication may be improved with quantum teleportation and entanglement swapping, which is robustly secure against the most general Trojan horse attacks. Our scheme is not an improvement of the communication apparatus, but the improvement of quantum communication protocol itself. We show that our modified schemes may be implemented with current technology.
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2007, Vol. 24 
