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A Theoretical Scheme for Multi-user Quantum Key Distribution with N Einstein-Podolsky-Rosen Pairs on a Passive Optical Network |
| DENG Fu-Guo1,2;LIU Xiao-Shu1,5;MA Ying-Jun1,2;Xiao Li1,2;LONG Gui-Lu1,2,3,4 |
| 1Department of Physics, Tsinghua University, Beijing 100084
2Key Laboratory for Quantum Information and Measurements, Beijing 100084
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Center for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084
5Department of Physics, Shandong Normal University, Ji’nan 250015
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| Cite this article: |
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DENG Fu-Guo, LIU Xiao-Shu, MA Ying-Jun et al 2002 Chin. Phys. Lett. 19 893-896 |
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Abstract We propose a theoretical scheme for any-to-any multi-user quantum key distribution on a passive optical network with ordered N Einstein-Podolsky-Rosen pairs. This scheme is safe and more efficient than those with single photons. Its efficiency approaches 100% in the limit that the number of pairs used in eavesdropping check becomes negligible. It also has high capacity and is convenient for users.
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| Keywords:
03.67.Dd
03.67.Hk
03.65.Ud
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Published: 01 July 2002
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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