Tuning the near field using all-dielectric nano-antennas offers a promising approach for trapping atoms, which could enable strong single-atom–photon coupling. Here we report the numerical study of an optical trapping of a single Cs atom above a waveguide with a silicon nano-antenna, which produces a trapping potential for atoms in a chip-scale configuration. Using counter-propagating incident fields, bichromatically detuned from the atomic cesium D-lines, we numerically investigate the dependence of the optical potential on the nano-antenna geometry. We tailor the near-field potential landscape by tuning the evanescent field of the waveguide using a toroidal nano-antenna, a configuration that enables trapping of ultracold Cs atoms. Our research opens up a plethora of trapping atoms applications in a chip-scale manner, from quantum computing to quantum sensing, among others.

中文翻译：

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具有聚焦介电纳米天线的波导上方Cs原子的定制光势。

使用全介电纳米天线调谐近场为捕获原子提供了一种有前途的方法，该方法可以实现强的单原子-光子耦合。在这里，我们报告了一个具有硅纳米天线的波导上方单个Cs原子的光捕获的数值研究，该硅纳米天线在芯片级配置中产生了原子的捕获势。使用从原子铯D线双色失谐的反向传播入射场，我们在数值上研究了光势对纳米天线几何形状的依赖性。我们通过使用环形纳米天线调整波导的van逝场，来定制近场电势景观，该结构能够捕获超冷的Cs原子。我们的研究以芯片规模的方式开辟了许多诱捕原子的应用，