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arXiv 2103.12592physics.optics
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利用远场波前整形实现多悬浮粒子的最佳冷却

Optimal Cooling of Multiple Levitated Particles through Far-Field Wavefront-Shaping

Jakob Hüpfl, Nicolas Bachelard, Markus Kaczvinszki, Michael Horodynski, Matthias Kühmayer, Stefan Rotter

摘要:

光的力量可以被用来悬浮介观物体,并将它们冷却到它们的运动量子基态。在将悬浮从单个粒子扩展到多个粒子的过程中,重要的障碍是需要不断监测粒子的位置,以及设计快速适当地对其运动做出反应的复杂光场。在这里,我们提出了一种同时解决这两个问题的方法。通过利用存储在随时间变化的散射矩阵中的信息,我们引入了一种鲁棒的形式主义,使空间调制波前的识别,同时冷却多个任意形状的悬浮物体。提出了一种基于频闪散射矩阵测量和调制光场时间自适应注入的实验实现方法。

英文摘要:

Light forces can be harnessed to levitate mesoscopic objects and cool them down towards their motional quantum ground state. Significant roadblocks on the way to scale up levitation from a single to multiple particles in close proximity are the requirements to constantly monitor the particles' positions as well as to engineer complex light fields that react fast and appropriately to their movements. Here, we present an approach that solves both problems at once. By exploiting the information stored in a time-dependent scattering matrix, we introduce a robust formalism enabling the identification of spatially modulated wavefronts, which simultaneously cool down multiple levitated objects of arbitrary shapes. An experimental implementation is suggested based on stroboscopic scattering-matrix measurements and time-adaptive injections of modulated light fields.

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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