Real-time dynamics in strongly correlated quantum-dot systems  

作　　者：程永喜 李振华 魏建华 罗洪刚 Yong-Xi Cheng;Zhen-Hua Li;Jian-Hua Wei;Hong-Gang Luo(Department of Science,Taiyuan Institute of Technology,Taiyuan 030008,China;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;Beijing Computational Science Research Center,Beijing 100193,China;Department of Physics,Renmin University of China,Beijing 100872,China)

机构地区：[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

出　　处：《Chinese Physics B》2023年第12期517-523,共7页中国物理B（英文版）

基　　金：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);the Fund from the Ministry of Science and Technology of China (Grant No.2022YFA1402704)。

摘　　要：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.

关 键 词：quantum dots mesoscopic transport DECOHERENCE 

分 类 号：O413[理学—理论物理]