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

页码：510 / 516

页数：6