The exchange interaction between neighboring quantum dots:physics and applications in quantum information processing  

作　　者：Zheng Zhou Yixin Li Zhiyuan Wu Xinping Ma Shichang Fan Shaoyun Huang 

机构地区：[1]School of Electronics, Beijing Key Laboratory of Quantum Devices, Key Laboratory for the Physics and Chemistry of Nanodevices, Peking University,Beijing 100871,China

出　　处：《Journal of Semiconductors》2024年第10期20-34,共15页半导体学报（英文版）

基　　金：funded by National Natural Science Foundation of China,(Grant Nos.11974030 and 92165208)。

摘　　要：Electron spins confined in semiconductor quantum dots(QDs)are one of potential candidates for physical implementation of scalable quantum information processing technologies.Tunnel coupling based inter exchange interaction between QDs is crucial in achieving single-qubit manipulation,two-qubit gate,quantum communication and quantum simulation.This review first provides a theoretical perspective that surveys a general framework,including the Helter−London approach,the Hund−Mulliken approach,and the Hubbard model,to describe the inter exchange interactions between semiconductor quantum dots.An electrical method to control the inter exchange interaction in a realistic device is proposed as well.Then the significant achievements of inter exchange interaction in manipulating single qubits,achieving two-qubit gates,performing quantum communication and quantum simulation are reviewed.The last part is a summary of this review.

关 键 词：exchange interaction quantum dots tunnel coupling quantum computation 

分 类 号：O413[理学—理论物理]