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Long-Quan Lai(赖龙泉) and Zhao Li(李照). 2024: Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations, Chinese Physics B, 33(10): 100303. doi: 10.1088/1674-1056/ad607b
Citation: Long-Quan Lai(赖龙泉) and Zhao Li(李照). 2024: Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations, Chinese Physics B, 33(10): 100303. doi: 10.1088/1674-1056/ad607b
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Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations

  • 1 School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;

  • 2 School of Electronic Engineering, Chengdu Technological University, Chengdu 611730, China

  • Received Date: 28/05/2024
    Accepted Date: 05/07/2024
  • Fund Project:

    This work was supported by the China Scholarship Council (Grant No. 201906130092), the Natural Science Research Start-up Foundation of Recruiting Talents of Nanjing University of Posts and Telecommunications (Grant No. NY223065), and the Natural Science Foundation of Sichuan Province (Grant No. 2023NSFSC1330).

  • Emission of matter-wave jets from a parametrically driven condensate has attracted significant experimental and theoretical attention due to the appealing visual effects and potential metrological applications. In this work, we investigate the collective particle emission from a Bose-Einstein condensate confined in a one-dimensional lattice with periodically modulated interparticle interactions. We give the regimes for discrete modes, and find that the emission can be distinctly suppressed. The configuration induces a broad band, but few particles are ejected due to the interference of the matter waves. We further qualitatively model the emission process and demonstrate the short-time behaviors. This engineering provides a way to manipulate the propagation of particles and the corresponding dynamics of condensates in lattices, and may find application in the dynamical excitation control of other nonequilibrium problems with time-periodic driving.
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Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations

  • Received Date: 28/05/2024
  • Accepted Date: 05/07/2024
Fund Project: 

Abstract: Emission of matter-wave jets from a parametrically driven condensate has attracted significant experimental and theoretical attention due to the appealing visual effects and potential metrological applications. In this work, we investigate the collective particle emission from a Bose-Einstein condensate confined in a one-dimensional lattice with periodically modulated interparticle interactions. We give the regimes for discrete modes, and find that the emission can be distinctly suppressed. The configuration induces a broad band, but few particles are ejected due to the interference of the matter waves. We further qualitatively model the emission process and demonstrate the short-time behaviors. This engineering provides a way to manipulate the propagation of particles and the corresponding dynamics of condensates in lattices, and may find application in the dynamical excitation control of other nonequilibrium problems with time-periodic driving.

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