Stückelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice

Shuang Liang, Zheng-Chun Li, Weiping Zhang, Lu Zhou, and Zhihao Lan
Phys. Rev. A 102, 033332 – Published 23 September 2020
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  • INTRODUCTION
  • MODEL
  • STÜCKELBERG INTERFEROMETRY
  • CHIRAL BLOCH OSCILLATION
  • SUMMARY AND OUTLOOK
  • ACKNOWLEDGMENTS
    • References

    Abstract

    Time evolution of spin-orbit-coupled cold atoms in an optical lattice is studied, with a two-band energy spectrum having two avoided crossings. A force is applied such that the atoms experience two consecutive Landau-Zener tunnelings while transversing the avoided crossings. Stückelberg interference arises from the phase accumulated during the adiabatic evolution between the two tunnelings. This phase is gauge field dependent and thus provides new opportunities to measure the synthetic gauge field, which is verified via calculation of spin transition probabilities after a double-passage process. Time-dependent and time-averaged spin probabilities are derived, in which resonances are found. We also demonstrate chiral Bloch oscillation and rich spin-momentum locking behavior in this system.

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    • Received 12 June 2020
    • Accepted 1 September 2020

    DOI:https://doi.org/10.1103/PhysRevA.102.033332

    ©2020 American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Optical lattices & trapsSpin-orbit coupling
    1. Techniques
    Atom interferometry
    Atomic, Molecular & Optical

    Authors & Affiliations

    Shuang Liang1, Zheng-Chun Li1, Weiping Zhang2,3, Lu Zhou1,3,*, and Zhihao Lan4,†

    • 1State Key Laboratory of Precision Spectroscopy, Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
    • 2Department of Physics and Astronomy, Shanghai Jiaotong University and Tsung-Dao Lee Institute, Shanghai 200240, China
    • 3Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
    • 4Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom

    • *lzhou@phy.ecnu.edu.cn
    • †z.lan@ucl.ac.uk

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    Vol. 102, Iss. 3 — September 2020

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