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

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 re...

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Bibliographic Details
Published in:Communications in theoretical physics 2022-05, Vol.74 (5), p.55104
Main Authors: Luo, Yuxin, Yi, Jia, Li, Wenjuan, Xie, Xin, Luo, Yunrong, Hai, Wenhua
Format: Article
Language:English
Subjects:
coherent control
spin tunneling
spin–orbit coupling
triple well
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Summary: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 SO-coupled 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.
ISSN:0253-6102
1572-9494
DOI:10.1088/1572-9494/ac64f3