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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
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
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号78期号:5页码:-
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.
部门归属[Wang, ZH; Su, ZB] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; [Wang, BS] Chinese Acad Sci, Inst Semicond, Beijing 100090, Peoples R China; [Wang, BS] Chinese Acad Sci, State Key Lab Semicond Superlattice & Microstruct, Beijing 100090, Peoples R China
关键词Wave-function Collapse Quantum Model Decoherence Reduction Dynamics Silicon
学科领域Physics
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收录类别SCI
WOS记录号WOS:000259368200089
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5488
专题理论物理所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
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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):-.
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