Effects of drive imbalance on the particle emission from a Bose-Einstein condensate in a one-dimensional lattice
Long-Quan Lai(赖龙泉)1,† and Zhao Li(李照)2,‡
1 School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China; 2 School of Electronic Engineering, Chengdu Technological University, Chengdu 611730, China
Abstract Time-periodic driving has been an effective tool in the field of nonequilibrium quantum dynamics, which enables precise control of the particle interactions. We investigate the collective emission of particles from a Bose-Einstein condensate in a one-dimensional lattice with periodic drives that are separate in modulation amplitudes and relative phases. In addition to the enhancement of particle emission, we find that amplitude imbalances lead to energy shift and band broadening, while typical relative phases may give rise to similar gaps. These results offer insights into the specific manipulations of nonequilibrium quantum systems with tone-varying drives.
Fund: Project 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).
Corresponding Authors:
Long-Quan Lai, Zhao Li
E-mail: lqlai@njupt.edu.cn;leezhao@hnu.edu.cn
Cite this article:
Long-Quan Lai(赖龙泉) and Zhao Li(李照) Effects of drive imbalance on the particle emission from a Bose-Einstein condensate in a one-dimensional lattice 2024 Chin. Phys. B 33 030308
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