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arXiv 2009.09369cond-mat.quant-gasnlin.PS
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亮物质波孤子的时间最优变分控制

Time-optimal variational control of bright matter-wave soliton

Tang-You Huang, Jia Zhang, Jing Li, Xi Chen

摘要:

受最近实验的启发,我们提出了通过费什巴赫共振控制原子吸引力的方法,对囚禁在准一维谐振阱中的亮物质波孤子进行时间最优变分控制。更特别的是,我们首先应用含时变分方法推导出捕获孤子形状的运动方程,然后将逆工程与最优控制理论相结合,设计原子相互作用,实现时间最优解压缩。由于时间最优解是bang-bang型的,因此进一步采用平滑正则化来平滑开-关控制器,从而避免了实际中由穿过费什巴赫共振的磁场斜坡引起的加热和原子损失。

英文摘要:

Motivated by recent experiments, we present the time-optimal variational control of bright matter-wave soliton trapped in a quasi-one-dimensional harmonic trap by manipulating the atomic attraction through Feshbach resonances. More specially, we first apply a time-dependent variational method to derive the motion equation for capturing the soliton's shape, and secondly combine inverse engineering with optimal control theory to design the atomic interaction for implementing time-optimal decompression. Since the time-optimal solution is of bang-bang type, the smooth regularization is further adopted to smooth the on-off controller out, thus avoiding the heating and atom loss, induced from magnetic field ramp across a Feshbach resonance in practice.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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