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arXiv 2103.10020cond-mat.quant-gasphysics.optics
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超冷原子的动态高分辨光囚禁

Dynamic high-resolution optical trapping of ultracold atoms

Guillaume Gauthier, Thomas A. Bell, Alexander B. Stilgoe, Mark Baker, Halina Rubinsztein-Dunlop, Tyler W. Neely

摘要:

所有的光都有结构,但直到最近才有可能构建高度可控和精确的电势,以便大多数实验室可以利用光进行特定的应用。在这一章中,我们回顾了新兴的高分辨率和可配置的超冷原子的光学捕获技术。我们专注于光学偏转器和空间光调制器在傅立叶和直接成像配置。这些光学技术使超流体动力学、单原子捕获的研究取得了重大进展,并成为新兴的原子电子学领域的基础。本章的目的是作为一个完整的指南,以实验的理解,选择,并实施最适当的光学捕获技术为特定的应用。在介绍了光阱和成像的基本理论之后,我们详细描述了上述每一种技术,为光学偏转器、数字光调制器和液晶空间光调制器的基本操作提供了指导。我们还描述了这些技术的能力,用于操纵被困的超冷原子,其中的潜力是动态修改,使实验,并在时间平均的潜力可以实现更复杂的陷阱。实施时间平均陷阱时的关键考虑事项进行了说明。

英文摘要:

All light has structure, but only recently it has become possible to construct highly controllable and precise potentials so that most laboratories can harness light for their specific applications. In this chapter, we review the emerging techniques for high-resolution and configurable optical trapping of ultracold atoms. We focus on optical deflectors and spatial light modulators in the Fourier and direct imaging configurations. These optical techniques have enabled significant progress in studies of superfluid dynamics, single-atom trapping, and underlie the emerging field of atomtronics. The chapter is intended as a complete guide to the experimentalist for understanding, selecting, and implementing the most appropriate optical trapping technology for a given application. After introducing the basic theory of optical trapping and image formation, we describe each of the above technologies in detail, providing a guide to the fundamental operation of optical deflectors, digital micromirror devices, and liquid crystal spatial light modulators. We also describe the capabilities of these technologies for manipulation of trapped ultracold atoms, where the potential is dynamically modified to enable experiments, and where time-averaged potentials can realise more complex traps. The key considerations when implementing time-averaged traps are described.

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