Coherence loss and recovery of an electron spin coupled inhomogeneously to a one-dimensional interacting spin bath: An adaptive time-dependent density-matrix renormalization group study
文献类型：期刊论文
| 作者 | Wang, Zhi-Hui; Wang, Bing-Shen; Su, Zhao-Bin ; Wang, ZH , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China, Peoples R China
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| 刊名 | PHYSICAL REVIEW B
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| 出版日期 | 2008 |
| 卷号 | 78期号:5页码:- |
| 关键词 | Wave-function Collapse Quantum Model Decoherence Reduction Dynamics Silicon |
| ISSN号 | 1098-0121 |
| 英文摘要 | Coherence evolution and echo effect of an electron spin, which is coupled inhomogeneously to an interacting one-dimensional finite spin bath via hyperfine-type interaction, are studied using the adaptive time-dependent density-matrix renormalization group method. It is found that the interplay of the coupling inhomogeneity and the transverse intrabath interactions results in two qualitatively different coherence evolutions, namely, a coherence-preserving evolution characterized by periodic oscillation and a complete decoherence evolution. Correspondingly, the echo effects induced by an electron-spin flip at time tau exhibit stable recoherence pulse sequence for the periodic evolution and a single peak at root 2 tau for the decoherence evolution, respectively. With the diagonal intrabath interaction included, the specific feature of the periodic regime is kept, while the root 2 tau-type echo effect in the decoherence regime is significantly affected. To render the experimental verifications possible, the Hahn echo envelope as a function of tau is calculated, which eliminates the inhomogeneous broadening effect and serves for the identification of the different status of the dynamic coherence evolution, periodic versus decoherence. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000259368200089 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5488]  |
| 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 | Wang, ZH , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhi-Hui,Wang, Bing-Shen,Su, Zhao-Bin,et al. Coherence loss and recovery of an electron spin coupled inhomogeneously to a one-dimensional interacting spin bath: An adaptive time-dependent density-matrix renormalization group study[J]. PHYSICAL REVIEW B,2008,78(5):-. |
| APA | Wang, Zhi-Hui,Wang, Bing-Shen,Su, Zhao-Bin,&Wang, ZH , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China, Peoples R China.(2008).Coherence loss and recovery of an electron spin coupled inhomogeneously to a one-dimensional interacting spin bath: An adaptive time-dependent density-matrix renormalization group study.PHYSICAL REVIEW B,78(5),-. |
| MLA | Wang, Zhi-Hui,et al."Coherence loss and recovery of an electron spin coupled inhomogeneously to a one-dimensional interacting spin bath: An adaptive time-dependent density-matrix renormalization group study".PHYSICAL REVIEW B 78.5(2008):-. |
入库方式： OAI收割
来源：理论物理研究所
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