| 应用单模腔场中的超导量子干涉仪制备n比特W态的简单方案 |
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| 引用本文： | 尹在峰,廖艳华,董正超.应用单模腔场中的超导量子干涉仪制备n比特W态的简单方案[J].淮阴师范学院学报(自然科学版),2007,6(3):216-219. |
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| 作者姓名： | 尹在峰 廖艳华 董正超 |
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| 作者单位： | 1. 延边大学理学院,物理系,吉林,延吉,133000;淮阴师范学院,物理系,江苏,淮安,223001
2. 淮阴师范学院,物理系,江苏,淮安,223001 |
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| 基金项目： | 江苏省高校自然科学基金资助项目(05KJB140008) |
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| 摘 要： | 提出了一个制备n比特W态的简单方案,利用一个单模腔场与放置在其中的n个超导量子干涉仪发生共振相互作用,且共振相互作用的耦合强度远大于其他作用的强度,此时,超导量子干涉仪其他能级与腔模间的相互作用可以忽略,这样,仅通过一步时间演化就可制得n比特W态.并且在衰减强度和耦合强度相接近时,仍然可以成功制备n比特W态.
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| 关 键 词： | 超导量子干涉仪 单模腔场 n比特W态 共振 |
| 文章编号： | 1671-6876（2007）03-0216-04 |
| 修稿时间： | 2007-02-28 |
Simple Scheme for Generating n-qubit W State Viaupper Conducting Quantum Interference Devices in a Cavity |
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| YIN Zai-feng,LIAO Yan-hua,DONG Zheng-chao.Simple Scheme for Generating n-qubit W State Viaupper Conducting Quantum Interference Devices in a Cavity[J].Journal of Huaiyin Teachers College(Natrual Science Edition),2007,6(3):216-219. |
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| Authors: | YIN Zai-feng LIAO Yan-hua DONG Zheng-chao |
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| Institution: | Department of Physics, College of Science, Yanbian University, Yanji Jilin 133000, China; Department of Physics, Huaiyin Teachers College, Huaian Jiangsu 223001, China |
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| Abstract: | We propose a simple scheme for generating n-qubit W state via superconducting quantum interference devices in a single-mode cavity.Superconducting quantum interference devices interact with the cavity resonantly,and the resonant coupling strength is much stronger than other interaction strength,so the other interaction is negligible.Thus,generating n-qubit W state is achieved by only one step evolution.In the case of the decay is close to the coupling of the cavity with the superconducting quantum interference devices,we still generate n-qubit W state successfully. |
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| Keywords: | superconduting quantum interference devices Single-mode cavity n-qubit W stateresonant |
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