Quantum entanglement of parallel-coupled double quantum dots: A theoretical study using the hierarchical equations of motion approach

被引：0
|
作者：
Gong H. [1 ]
Ullah A. [1 ]
Ye L. [1 ]
Zheng X. [1 ]
Yan Y. [2 ]
机构：
[1] Hefei National Laboratory for Physical Sciences at the Microscale, Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei
[2] Hefei National Laboratory for Physical Sciences at the Microscale, IChEM, University of Science and Technology of China, Hefei
来源：
Zheng, Xiao (xz58@ustc.edu.cn) | 2018年 / American Institute of Physics Inc.卷 / 31期
基金：
中国国家自然科学基金;
关键词：
Concurrence; Double quantum dots; Hierarchical-equations-of-motion method; Quantum entanglement; Rényi entropy; von Neumann entropy;
D O I：
10.1063/1674-0068/31/CJCP1806138
中图分类号：
学科分类号：
摘要：
Quantum dots comprise a type of quantum impurity system. The entanglement and coherence of quantum states are significantly influenced by the strong electron-electron interactions among impurities and their dissipative coupling with the surrounding environment. Competition between many-body effects and transfer couplings plays an important role in determining the entanglement among localized impurity spins. In this work, we employ the hierarchical-equations-of-motion approach to explore the entanglement of a strongly correlated double quantum dots system. The relation between the total system entropy and those of subsystems is also investigated. © 2018 Chinese Physical Society.
引用
收藏
页码：510 / 516
页数：6
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