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Chinese Journal of Chemical Physics

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

Hong Yu Gong, Arif Ullah, LvZhou Ye, Xiao Hong Zheng, YiJing Yan

Published Aug 1, 2018• 14 citations
Publisher

Abstract

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.

DOI
10.1063/1674-0068/31/cjcp1806138

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