Spatial rotation and time-evolution operator of two-level systems
文献类型：期刊论文
| 作者 | Li, CF; Zhao, XG; Li, CF , Shanghai Univ, Dept Phys, 99 Qixiang Rd, Shanghai 200436, Peoples R China. |
| 刊名 | INTERNATIONAL JOURNAL OF MODERN PHYSICS B
 |
| 出版日期 | 2000 |
| 卷号 | 14期号:1页码:101-112 |
| 关键词 | 2-level Systems Dynamics |
| ISSN号 | 0217-9792 |
| 英文摘要 | All the six kinds of rotation approach with the same form to the evolution problem of arbitrarily time-dependent two-level systems are investigated in this paper. A time-dependent two-level system can be viewed as a spin-1/2 system in a time-varying magnetic field. It is shown that for each kind of rotation approach, we can always find a rotating frame in which the direction of the effective magnetic field is fixed. This property reduces the problem of finding the time-evolution operator to the solution of a second-order differential equation. Applications are made to the J C model in quantum optics and the Landau-Zener model in resonance physics. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000085214200009 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13028]  |
| 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 | Li, CF , Shanghai Univ, Dept Phys, 99 Qixiang Rd, Shanghai 200436, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, CF,Zhao, XG,Li, CF , Shanghai Univ, Dept Phys, 99 Qixiang Rd, Shanghai 200436, Peoples R China.. Spatial rotation and time-evolution operator of two-level systems[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B,2000,14(1):101-112. |
| APA | Li, CF,Zhao, XG,&Li, CF , Shanghai Univ, Dept Phys, 99 Qixiang Rd, Shanghai 200436, Peoples R China..(2000).Spatial rotation and time-evolution operator of two-level systems.INTERNATIONAL JOURNAL OF MODERN PHYSICS B,14(1),101-112. |
| MLA | Li, CF,et al."Spatial rotation and time-evolution operator of two-level systems".INTERNATIONAL JOURNAL OF MODERN PHYSICS B 14.1(2000):101-112. |
入库方式： OAI收割
来源：理论物理研究所
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