| Realization of Greenberg-Horne-Zeilinger （GHZ） and W Entangled States with Multiple Superconducting Quantum-Interference Device Qubits in Cavity QED |
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| 引用本文： | 郑安寿,万珍珠,毕洁.Realization of Greenberg-Horne-Zeilinger （GHZ） and W Entangled States with Multiple Superconducting Quantum-Interference Device Qubits in Cavity QED[J].中国物理快报,2006,23(12):3267-3270. |
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| 作者姓名： | 郑安寿 万珍珠 毕洁 |
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| 作者单位： | [1]College of Mathematics and Physics, China University of Geosciences, Wuhan 430074 [2]Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| 基金项目： | Supported in part by the National Natural Science Foundation of China under Grant Nos 10575040 and 90503010. |
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| 摘 要： | An alternative scheme is proposed for generating the Greenberg-Horne-Zeilinger （GHZ） and W types of the entangled states with multiple superconducting quantum-interference device （SQUID） qubits in a single-mode microwave cavity field. In this scheme, there is no transfer of quantum information between the SQUIDs and the cavity, the cavity is always in the vacuum and thus the requirement on the quality of cavity is greatly loosened. In addition, during the process of the generation of the W entangled state, the present method does not involve a real excitation of intermediate levels. Thus, decoherence due to energy relaxation of intermediate levels is minimized.
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| 关 键 词： | 腔场 QED GHZ态 W纠缠态 超导量子干涉仪 耦合 量子比特 |
| 收稿时间： | 2006-07-26 |
| 修稿时间： | 2006-07-26 |
Realization of Greenberg--Horne--Zeilinger (GHZ) and W Entangled States with Multiple Superconducting Quantum-Interference Device Qubits in Cavity QED |
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| ZHENG An-Shou,WAN Zhen-Zhu,BI Jie.Realization of Greenberg--Horne--Zeilinger (GHZ) and W Entangled States with Multiple Superconducting Quantum-Interference Device Qubits in Cavity QED[J].Chinese Physics Letters,2006,23(12):3267-3270. |
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| Authors: | ZHENG An-Shou WAN Zhen-Zhu BI Jie |
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| Institution: | 1.College of Mathematics and Physics, China University of Geosciences, Wuhan 430074; 2 .Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| Abstract: | An alternative scheme is proposed for generating the Greenberg--Horne--Zeilinger (GHZ) and W types of the entangled states with multiple superconducting quantum-interference device (SQUID) qubits in a single-mode microwave cavity field. In this scheme, there is no transfer of quantum information between the SQUIDs and the cavity, the cavity is always in the vacuum and thus the requirement on the quality of cavity is greatly loosened. In addition, during the process of the generation of the W entangled state, the present method does not involve a real excitation of intermediate levels. Thus, decoherence due to energy relaxation of intermediate levels is minimized. |
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| Keywords: | 42 50 Dv 85 25 Dq 89 70 +c |
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