| Scheme for implementing quantum dense coding with four-particle decoherence-free states in an ion trap |
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| 作者姓名： | 郑小娟 曹 帅 方卯发 廖湘萍 |
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| 作者单位： | School of Physics Science and Technology,
Central South University, Changsha 410083, China;College of Physics and Information Science, Hunan Normal
University, Changsha 410081, China;College of Sciences, South China Agricultural University, Guangzhou 510642, China;College of Physics and Information Science, Hunan Normal
University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal
University, Changsha 410081, China;Department of Physics, Hunan Industrial University,
Zhuzhou 412000, China |
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| 基金项目： | Project supported by
the Important Program of Hunan Provincial Education Department
(Grant No 06A038), Department of Education of Hunan Province (Grant
No 06C080), and Hunan Provincial Natural Science Foundation, China
(Grant No 06JJ4003). |
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| 摘 要： | This paper proposes an experimentally feasible scheme for implementing quantum dense coding of trapped-ion system in decoherence-free states. As the phase changes due to time evolution of components with different eigenenergies of quantum superposition are completely frozen, quantum dense coding based on this model would be perfect. The scheme is insensitive to heating of vibrational mode and Bell states can be exactly distinguished via detecting the ionic state.
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| 关 键 词： | 量子密度编码 截留离子 自由脱离状态 量子学 |
| 收稿时间： | 2007-06-27 |
| 修稿时间： | 2007-06-29 |
Scheme for implementing quantum dense coding with four-particle decoherence-free states in an ion trap |
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| Zheng Xiao-Juan,Cao Shuai,Fang Mao-Fa and Liao Xiang-Ping.Scheme for implementing quantum dense coding with four-particle decoherence-free states in an ion trap[J].Chinese Physics B,2008,17(2):431-434. |
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| Authors: | Zheng Xiao-Juan Cao Shuai Fang Mao-Fa and Liao Xiang-Ping |
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| Institution: | College of Physics and Information Science, Hunan Normal
University, Changsha 410081, China; College of Sciences, South China Agricultural University, Guangzhou 510642, China;College of Physics and Information Science, Hunan Normal
University, Changsha 410081, China; Department of Physics, Hunan Industrial University,
Zhuzhou 412000, China; School of Physics Science and Technology,
Central South University, Changsha 410083, China;College of Physics and Information Science, Hunan Norm |
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| Abstract: | This paper proposes an experimentally feasible scheme for
implementing quantum dense coding of trapped-ion system in
decoherence-free states. As the phase changes due to time evolution
of components with different eigenenergies of quantum superposition
are completely frozen, quantum dense coding based on this model
would be perfect. The scheme is insensitive to heating of
vibrational mode and Bell states can be exactly distinguished via
detecting the ionic state. |
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| Keywords: | entanglement quantum dense
coding trapped ions decoherence-free state |
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