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Real-time dynamics in strongly correlated quantum-dot systems |
| Yong-Xi Cheng(程永喜)1,2,3, Zhen-Hua Li(李振华)2,†, Jian-Hua Wei(魏建华)4, and Hong-Gang Luo(罗洪刚)2 |
1 Department of Science, Taiyuan Institute of Technology, Taiyuan 030008, China;
2 Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, and Key Laboratory of Quantum Theory and Applications of the Ministry of Education, Lanzhou University, Lanzhou 730000, China;
3 Beijing Computational Science Research Center, Beijing 100193, China;
4 Department of Physics, Renmin University of China, Beijing 100872, China |
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Abstract We investigate the real-time dynamical properties of Rabi-type oscillation through strongly correlated quantum-dot systems by means of accurate hierarchical equations of motion. It is an extension of the hierarchical Liouville-space approach for addressing strongly correlated quantum-dot systems. We study two paradigmatic models, the single quantum-dot system, and serial coupling double quantum-dot system. We calculate accurately the time-dependent occupancy of quantum-dot systems subject to a sudden change of gate voltage. The Rabi-type oscillation of the occupancy and distinct relaxation time of the quantum-dot systems with different factors are described. This is helpful to understand dissipation and decoherence in real-time dynamics through nanodevices and provides a theoretical frame to experimental investigation and manipulation of molecular electronic devices.
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Received: 28 May 2023
Revised: 06 August 2023
Accepted manuscript online: 28 August 2023
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PACS:
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73.63.Kv
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(Quantum dots)
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73.63.-b
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(Electronic transport in nanoscale materials and structures)
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.11804245, 11747098, 11774418, 12247101, and 12047501), the Scientific and Technologial Innovation Programs of Higher Education Institutions of Shanxi Province, China (Grant No.2021L534), and the Fund from the Ministry of Science and Technology of China (Grant No.2022YFA1402704). |
Corresponding Authors:
Zhen-Hua Li
E-mail: lizhenhua@lzu.edu.cn
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Cite this article:
Yong-Xi Cheng(程永喜), Zhen-Hua Li(李振华), Jian-Hua Wei(魏建华), and Hong-Gang Luo(罗洪刚) Real-time dynamics in strongly correlated quantum-dot systems 2023 Chin. Phys. B 32 127302
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