We investigate the possibility of strong localization, of the Lamb–Dicke type, for cold atoms trapped by a far off-resonant Ferris wheel optical dipole potential. This optical dipole potential light field is created when a light field generated by the superposition of two similar co-propagating Laguerre–Gaussian beams, with opposite winding numbers, interacts with a two-level atom. We show that strong confinement of atoms in such a light field is possible when the light field is tightly focused, for low values of the winding number and relatively high values of power. We show that a combination of a Ferris wheel with an ordinary axial Gaussian optical lattice provides 3D cylindrically symmetric optical lattices in which the Lamb–Dicke limit can be reached for typically used experimental parameter values.

中文翻译：

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摩天轮光学偶极子势中冷原子的 Lamb-Dicke 局域化

我们研究了 Lamb-Dicke 型强局域化的可能性，冷原子被远离共振的摩天轮光学偶极子势俘获。这种光学偶极子势光场是由两个类似的共同传播的拉盖尔-高斯光束叠加产生的光场产生的，具有相反的绕组数，与两能级原子相互作用。我们表明，当光场紧密聚焦时，对于较低的绕组数值和相对较高的功率值，原子在这种光场中的强限制是可能的。我们展示了摩天轮与普通轴向高斯光学晶格的组合提供了 3D 圆柱对称光学晶格，其中对于通常使用的实验参数值可以达到 Lamb-Dicke 极限。