| A secure identification system using coherent states |
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| 作者姓名： | 何广强 曾贵华 |
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| 作者单位： | The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced
Optical Communication Systems,Electronic Engineering Department, Shanghai
Jiaotong University, Shanghai 200030, China;The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced
Optical Communication Systems,Electronic Engineering Department, Shanghai
Jiaotong University, Shanghai 200030, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 60472018). |
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| 摘 要： |
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| 关 键 词： | 安全鉴别系统 连贯态 量子鉴别 极化编码 解码 量子噪声 |
| 收稿时间： | 2004-12-19 |
| 修稿时间： | 7/6/2005 12:00:00 AM |
A secure identification system using coherent state |
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| He Guang-Qiang and Zeng Gui-Hua.A secure identification system using coherent states[J].Chinese Physics B,2006,15(2):371-374. |
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| Authors: | He Guang-Qiang and Zeng Gui-Hua |
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| Institution: | The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced
Optical Communication Systems,Electronic Engineering Department, Shanghai
Jiaotong University, Shanghai 200030, China |
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| Abstract: | A quantum identification system based on the
transformation of polarization of a mesoscopic coherent state is proposed.
Physically, an initial polarization state which carries the identity
information is transformed into an arbitrary elliptical polarization state.
To verify the identity of a communicator, a reverse procedure is
performed by the receiver. For simply describing the transformation
procedure, the analytical methods of Poincar\'{e} sphere and quaternion are
adopted. Since quantum noise provides such a measurement uncertainty for the
eavesdropping that the identity information cannot be retrieved from the
elliptical polarization state, the proposed scheme is secure. |
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| Keywords: | quantum identification polarization encryption and decryption quantum noise Poincar\'{e} sphere |
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