This paper explains how the optical quadrupole interaction between a two-level neutral atom and two counter-propagating non-diffracting Bessel beams can exhibit interesting rotational characteristics. It shows that, in this case, the atom dynamics are determined by a radiation pressure force as well as a gradient quadrupole force. Under appropriate circumstances, neutral atoms are able to rotate with zig-zag trajectories in specific spaces inside annular shapes produced by quadrupole potential. This occurs especially when $m>0$ Bessel beam.

中文翻译：

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贝塞尔光束的主动四极相互作用及其对原子的影响

本文解释了两能级中性原子和两个反向传播的非衍射贝塞尔光束之间的光学四极相互作用如何表现出有趣的旋转特性。它表明，在这种情况下，原子动力学由辐射压力和梯度四极力决定。在适当的情况下，中性原子能够在四极电势产生的环形形状内的特定空间中以锯齿形轨迹旋转。尤其是当$米>0$ 贝塞尔光束。