• Acta Physica Sinica
  • Vol. 68, Issue 17, 173201-1 (2019)
Zhi-Qiang Li1、3 and Yue-Ming Wang2、3、*
Author Affiliations
  • 1Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China
  • 2School of Physics and Electronic Engineer, Shanxi University, Taiyuan 030006, China
  • 3State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
  • show less
    DOI: 10.7498/aps.68.20190143 Cite this Article
    Zhi-Qiang Li, Yue-Ming Wang. One-dimensional spin-orbit coupling Bose gases with harmonic trapping[J]. Acta Physica Sinica, 2019, 68(17): 173201-1 Copy Citation Text show less

    Abstract

    Rabi model is a popular model in quantum optics and describes a two-level system coupling to a quantum resonator. The fruitful physics appears when the coupling strength is comparable to the frequency of the resonator. We investigate the Bose gases of Raman induced spin-orbit coupling with an external harmonic trapping. Using the displacement Fock state in quantum optics we seek for an approximate ground state. We find the superposition state of left and right displaced oscillator state with odd parity has lower energy than the displaced state itself. Besides, we study the time evolution of both the momentum and the position of the system at single particle level to demonstrate the Zitterbewegung oscillating characteristics, which present an intuitive physical picture and are in qualitative agreement with the relevant experimental results. The results are useful to study the Rabi model in deep-strong coupling regime, the model that is difficult to realize in today’s experiment based on the high controllability property of laser, and these results are also instructive for the cold atom physics field.
    Zhi-Qiang Li, Yue-Ming Wang. One-dimensional spin-orbit coupling Bose gases with harmonic trapping[J]. Acta Physica Sinica, 2019, 68(17): 173201-1
    Download Citation