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arXiv · 2401.05119

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

L. Q. Lai·Z. Li
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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 for manipulating the propagation of particles and the corresponding dynamics of condensates in lattices, and may find use in the dynamical excitation control of other nonequilibrium problems with time-periodic driving.

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L. Q. Lai, Z. Li. 2024-01-10. Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations. https://doi.org/10.1088/1674-1056/ad607b

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