Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach
文献类型：期刊论文
| 作者 | Gao, YB; Wang, YD ; Sun, CP; Gao, YB , Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China.
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| 刊名 | PHYSICAL REVIEW A
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| 出版日期 | 2005 |
| 卷号 | 71期号:3页码:- |
| 关键词 | Macroscopic Quantum States Cooper-pair-box Josephson-junction |
| ISSN号 | 1050-2947 |
| 英文摘要 | From the viewpoint of quasinormal modes, we describe a decoherence mechanism of charge qubit of Josephson junctions (JJ) in a lossy microcavity, which can appear in a realistic experiment for quantum computation based on a JJ qubit. We show that nonlinear coupling of a charge qubit to the quantum cavity field can result in additional dissipation of the resonant mode due to the effective interaction between those nonresonant modes and the resonant mode, which is induced by the charge qubit itself. We calculate the characteristic time of the decoherence by making use of the system plus bath method. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000228632100017 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13867]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Gao, YB , Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Gao, YB,Wang, YD,Sun, CP,et al. Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach[J]. PHYSICAL REVIEW A,2005,71(3):-. |
| APA | Gao, YB,Wang, YD,Sun, CP,&Gao, YB , Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China..(2005).Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach.PHYSICAL REVIEW A,71(3),-. |
| MLA | Gao, YB,et al."Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach".PHYSICAL REVIEW A 71.3(2005):-. |
入库方式： OAI收割
来源：理论物理研究所
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