中国物理B ›› 2024, Vol. 33 ›› Issue (10): 100303-100303.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

Long-Quan Lai(赖龙泉)1,† and Zhao Li(李照)2   

  1. 1 School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    2 School of Electronic Engineering, Chengdu Technological University, Chengdu 611730, China
  • 收稿日期:2024-05-28 修回日期:2024-07-05 接受日期:2024-07-09 出版日期:2024-10-03 发布日期:2024-09-13
  • 通讯作者: Long-Quan Lai E-mail:lqlai@njupt.edu.cn
  • 基金资助:
    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).

Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations

Long-Quan Lai(赖龙泉)1,† and Zhao Li(李照)2   

  1. 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:2024-05-28 Revised:2024-07-05 Accepted:2024-07-09 Online:2024-10-03 Published:2024-09-13
  • Contact: Long-Quan Lai E-mail:lqlai@njupt.edu.cn
  • Supported by:
    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).

摘要: 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.

关键词: Bose-Einstein condensate, matter-wave jet, periodic modulation

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.

Key words: Bose-Einstein condensate, matter-wave jet, periodic modulation

中图分类号:  (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)

  • 03.75.Kk
03.75.Nt (Other Bose-Einstein condensation phenomena) 05.30.Jp (Boson systems)