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, ZH ; Wang, BS ; Su, ZB |
| 刊名 | physical review b
 |
| 出版日期 | 2008 |
| 卷号 | 78期号:5页码:art. no. 054433 |
| 关键词 | WAVE-FUNCTION COLLAPSE QUANTUM MODEL DECOHERENCE REDUCTION DYNAMICS SILICON |
| ISSN号 | 1098-0121 |
| 通讯作者 | wang, zh, chinese acad sci, inst theoret phys, beijing 100080, peoples r china. |
| 中文摘要 | 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 | 半导体物理 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2010-03-08 |
| 源URL | [http://ir.semi.ac.cn/handle/172111/6464]  |
| 专题 | 半导体研究所_中国科学院半导体研究所（2009年前） |
| 推荐引用方式 GB/T 7714 | Wang, ZH,Wang, BS,Su, ZB. 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):art. no. 054433. |
| APA | Wang, ZH,Wang, BS,&Su, ZB.(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),art. no. 054433. |
| MLA | Wang, ZH,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):art. no. 054433. |
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来源：半导体研究所
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