| Quantum Encryption Protocol Based on Continuous Variable EPR Correlations |
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| 作者姓名： | HE Guang-Qiang ZENG Gui-Hua |
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| 作者单位： | The State Key Laboratory of Fibre-Optic Local Area Networks and Advanced Optical Communication Systems, Depart-ment of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200030, China |
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| 基金项目： | The project supported by National Natural Science Foundation of China under Grant No. 60472018 |
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| 摘 要： | A quantum encryption protocol based on Gaussian-modulated continuous variable EPR correlations is proposed. The security is guaranteed by continuous variable EPR entanglement correlations produced by nondegenerate optical parametric amplifier （NOPA）. For general beam splitter eavesdropping strategy, the mutual information I（α, ε） between Alice and Eve is caJculated by employing Shannon information theory. Finally the security analysis is presented.
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| 关 键 词： | 量子密码术 量子编码 EPR相关性 NOPA |
| 收稿时间： | 2005-10-01 |
| 修稿时间： | 2005-10-01 |
Quantum Encryption Protocol Based on Continuous Variable EPR Correlations |
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| HE Guang-Qiang ZENG Gui-Hua.Quantum Encryption Protocol Based on Continuous Variable EPR Correlations[J].Communications in Theoretical Physics,2006,46(1):61-64. |
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| Authors: | HE;Guang-Qiang;ZENG;Gui-Hua |
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| Abstract: | |
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| Keywords: | quantum cryptography quantum encryption EPR correlations NOPA |
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