Coherent control of spin tunneling in a driven spin–orbit coupled bosonic triple well  

作　　者：Yuxin Luo Jia Yi Wenjuan Li Xin Xie Yunrong Luo Wenhua Hai 

机构地区：[1]Key Laboratory for Matter Microstructure and Function of Hunan Province,and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education,School of Physics and Electronics,Hunan Normal University,Changsha 410081 China [2]School of Management,Hunan University of Information Technology,Changsha 410151 China

出　　处：《Communications in Theoretical Physics》2022年第5期45-50,共6页理论物理通讯（英文版）

基　　金：supported by the Scientific Research Foundation of Hunan Provincial Education Department under Grants No.21B0063 and No.18C0027;the Hunan Provincial Natural Science Foundation of China under Grants No.2021JJ30435 and No.2017JJ3208;the National Natural Science Foundation of China under Grant No.11747034。

摘　　要：We investigate the coherent control of spin tunneling for a spin–orbit(SO)coupled boson trapped in a driven triple well.In the high-frequency limit,the quasienergies of the system are obtained analytically and the fine energy band structures are shown.By regulating the driving parameters,we reveal that the directed spin-flipping or spin-conserving tunneling of an SOcoupled boson occurs along different pathways and in different directions.The analytical results are demonstrated by numerical simulations and good agreements are found.Further,an interesting scheme of quantum spin tunneling switch with or without spin-flipping is presented.The results may have potential applications in the design of spintronic devices.

关 键 词：coherent control spin tunneling spin-orbit coupling triple well 

分 类 号：O469[理学—凝聚态物理]