| Scheme for splitting quantum information via W states in cavity QED systems |
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| 作者姓名： | 于希梅 顾永建 马丽珍 周邦安 |
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| 作者单位： | Department of Physics, Ocean University of China, Qingdao 266100, China;Department of Physics, Ocean University of China, Qingdao 266100, China;Department of Physics, Ocean University of China, Qingdao 266100, China;Weifang Education TV, Weifang 261041, China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of China (Grant No 60677044) and the
Funds for Introduced Talent of Ocean University of China. |
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| 摘 要： | Assisted by multipartite entanglement, Quantum information may be split so that the original qubit can be reconstructed if and only if the recipients cooperate. This paper proposes an experimentally feasible scheme for splitting quantum information via W-type entangled states in cavity QED systems, where three-level Rydberg atoms interact with nonresonant cavities. Since W-type states are used as the quantum channel and the cavities are only virtually excited, the scheme is easy to implement and robust against decoherence, and the dependence on the quality factor of the cavities is greatly reduced.
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| 关 键 词： | 分裂量子信息 W型状态 QED 空泡 |
| 收稿时间： | 7/6/2007 12:00:00 AM |
| 修稿时间： | 7/9/2007 12:00:00 AM |
Scheme for splitting quantum information via W states in cavity QED systems |
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| Yu Xi-Mei,Gu Yong-Jian,Ma Li-Zhen and Zhou Bang-An.Scheme for splitting quantum information via W states in cavity QED systems[J].Chinese Physics B,2008,17(2):462-466. |
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| Authors: | Yu Xi-Mei Gu Yong-Jian Ma Li-Zhen and Zhou Bang-An |
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| Institution: | Department of Physics, Ocean University of China, Qingdao 266100, China; Weifang Education TV, Weifang 261041, China |
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| Abstract: | Assisted by multipartite entanglement, Quantum information may be
split so that the original qubit can be reconstructed if and only if
the recipients cooperate. This paper proposes an experimentally
feasible scheme for splitting quantum information via W-type
entangled states in cavity QED systems, where three-level Rydberg
atoms interact with nonresonant cavities. Since W-type states are
used as the quantum channel and the cavities are only virtually
excited, the scheme is easy to implement and robust against
decoherence, and the dependence on the quality factor of the
cavities is greatly reduced. |
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| Keywords: | splitting quantum information W-type states cavity QED |
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