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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 |
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| Cite this article: |
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CAI Qing-Yu, LV Hua 2007 Chin. Phys. Lett. 24 1154-1157 |
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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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| Keywords:
03.67.Hk
03.67.Dd
03.67.-a
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Received: 25 December 2006
Published: 23 April 2007
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| PACS: |
03.67.Hk
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(Quantum communication)
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03.67.Dd
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(Quantum cryptography and communication security)
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03.67.-a
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(Quantum information)
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