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Dissipative dynamics of a driven two-level quantum dot interacting with a structured reservoir with two-peaked spectrum

文献类型：期刊论文

作者Guo, Xiaoyong1; Ren, Zhongzhou2,3; Guo, Guangjie1; Zhou, Bo1
刊名CANADIAN JOURNAL OF PHYSICS
出版日期2012-09
卷号90页码:895-901
ISSN号0008-4204
DOI10.1139/P2012-084
英文摘要In this paper, we investigate the dissipative dynamics of a driven two-level quantum dot weakly coupled with a structured reservoir that is characterized by a double-peaked spectral function. We discuss the time-dependent dissipation coefficients and the Bloch vector by using a time-local non-markovian master equation. It is shown that the decay rates display temporarily negative values that can be manipulated by the distance between the two peaks in the spectral function. For the strong pumping case, the nonsecular effect gives rise to the non-markovian dynamics of the Bloch vector. However, for the weak pumping case, the non-markovian dynamics show up when contributions from secular and nonsecular terms are comparable. hi the long time limit, the signature of non-markovian dynamics disappears and the behavior obeys Fermi's golden rule.
WOS关键词MASTER EQUATION
资助项目Research Fund of Doctoral Point (RFDP)[20100091110028]
WOS研究方向Physics
语种英语
WOS记录号WOS:000308973200009
出版者CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
源URL[http://119.78.100.186/handle/113462/56907]  
专题中国科学院近代物理研究所
通讯作者Guo, Xiaoyong
作者单位1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion, Lanzhou 730000, Peoples R China
3.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Xiaoyong,Ren, Zhongzhou,Guo, Guangjie,et al. Dissipative dynamics of a driven two-level quantum dot interacting with a structured reservoir with two-peaked spectrum[J]. CANADIAN JOURNAL OF PHYSICS,2012,90:895-901.
APA Guo, Xiaoyong,Ren, Zhongzhou,Guo, Guangjie,&Zhou, Bo.(2012).Dissipative dynamics of a driven two-level quantum dot interacting with a structured reservoir with two-peaked spectrum.CANADIAN JOURNAL OF PHYSICS,90,895-901.
MLA Guo, Xiaoyong,et al."Dissipative dynamics of a driven two-level quantum dot interacting with a structured reservoir with two-peaked spectrum".CANADIAN JOURNAL OF PHYSICS 90(2012):895-901.

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来源：近代物理研究所

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