AI 中文总结
研究一维晶格双阱势中玻色-爱因斯坦凝聚体的非线性动力学，通过调制原子间相互作用、阱间深度不对称及跳跃幅度来控制粒子流发射，揭示了不对称和外部驱动对量子多体输运的影响，为原子器件设计提供思路。
AI 中文摘要
我们研究了被困在一维晶格双阱势中的玻色-爱因斯坦凝聚体的非线性动力学，其中原子间相互作用随时间周期性调制。在对称双阱的典型情况下，我们观察到共振驱动下的集体粒子发射，激发状态受驱动强度和跳跃幅度相互作用明确限制。通过引入阱间深度不对称，发现适度偏置会增强发射率，而大不对称则抑制它。粒子流可通过调制跳跃幅度进一步控制，有限跳跃不平衡时发射会减弱。这些结果概述了不对称和外部驱动在精确操纵量子多体输运中的作用，可能为原子器件设计提供见解。
英文摘要
We investigate the nonlinear dynamics of a Bose-Einstein condensate trapped in a double-well potential of a one-dimensional lattice, where the interatomic interactions are periodically modulated in time. In the typical case of a symmetric double-well, we observe collective particle emission under resonant driving, where the excitation regimes are explicitly constrained by the interplay between the drive strength and the hopping amplitude. By introducing a depth asymmetry between the wells, we find that moderate bias specifically enhances the emission rate, while large asymmetry suppresses it. The particle jets can be further controlled by modulating the hopping amplitudes, where the emission is weakened for finite hopping imbalances. These results outline the roles of asymmetry and external driving in precisely manipulating quantum many-body transport, and may offer insights into the design of atomtronic devices.
Comments9 pages, 8 figures
Journal refAnn. Phys. (Berlin) 538, e70253 (2026)
