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Increasing the Efficiencies of Random-Choice-Based Quantum Communication Protocols with Delayed Measurement |
| DENG Fu-Guo1,2;LONG Gui-Lu1,2,3; WANG Yan4;XIAO Li1,2 |
| 1Centre for Quantum Information and Department of Physics, Tsinghua University, Beijing 100084
2Key Laboratory for Quantum Information and Measurements of MOE, Tsinghua University, Beijing 100084
3Centre for Atomic and Molecular NanoSciences, Tsinghua University, Beijing 100084
4Key Laboratory of Beam Technology and Materials Modification of MOE, and Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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DENG Fu-Guo, LONG Gui-Lu, WANG Yan et al 2004 Chin. Phys. Lett. 21 2097-2100 |
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Abstract The security of quantum communications lies in the capability of the legitimate parties to detect eavesdropping. Here we propose to use delayed measurement to increase the efficiency of protocols of quantum key distribution and quantum secret sharing that uses a random choice of measuring-basis. In addition to a higher efficiency, these measures also bring the benefit of much reduced amount of classical communications.
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| Keywords:
03.67.Dd
03.67.-a
03.65.Ud
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Published: 01 November 2004
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| PACS: |
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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03.65.Ud
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(Entanglement and quantum nonlocality)
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