发表机构
CNRS, Université de Bordeaux, LOMA, UMR5798（法国国家科学研究中心，波尔多大学，LOMA实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出通过光波前整形优化程序，独立于机械刚度调制悬浮光力学中的反冲加热速率，实现平滑深度调制，为光机耦合动态控制开辟新途径。
AI 中文摘要
光学悬浮利用光力在真空中捕获介观物体并组装出纯净的振子，其机械性质通常通过激光强度调制来驯服——例如，用以调控刚度或设计量子态。当在低气压下接近量子区域时，振子的动力学由反冲加热主导，该加热源于散射光子的反作用，对其控制极具吸引力。在此，我们证明可以利用捕获光场内可访问的空间自由度来调制反冲加热。具体而言，我们引入一种优化程序，对光场的波前进行空间整形，以独立于机械刚度等其他参数来最大化或最小化反冲加热速率。重要的是，该方法可用于设计图案序列，提供平滑且深度的调制。该工作可集成到常见实验装置中，为光学悬浮中光机耦合的动态调制开辟了道路。
英文摘要
Optical levitation relies on light forces to trap mesoscopic objects in a vacuum and assemble pristine oscillators, whose mechanical properties are commonly tamed through laser-intensity modulation--e.g., to provide leverage over the stiffness or engineer quantum states. When approaching the quantum regime at low pressure, the oscillator's dynamics is governed by recoil heating, which stems from the backaction of scattered photons and whose control is highly desirable. Here, we demonstrate that spatial degrees of freedom accessible within the trapping-light field can be harnessed to modulate recoil heating. Specifically, we introduce an optimization routine that spatially shapes the optical field's wavefront to either maximize or minimize the recoil-heating rate independently of other parameters like the mechanical stiffness. Importantly, this approach can serve to devise sequences of patterns providing smooth and deep modulations. Implementable into common experimental setups, this work leads the way to the dynamic modulation of optomechanical coupling in optical levitation.
Comments14 pages, 4 Figures and Supplementary Materials provided at the end of the document
