We propose a scheme for subwavelength three-dimensional (3D) Rydberg atom localization in a (V + Ξ)-type atomic system by spatial optical absorption microscopy. Position-dependent atom–field interaction allows atom position information to be obtained via measurement of the probe absorption. Some distinctive spatial localization patterns are discovered by adjusting the detuning and Rabi frequency of the laser fields. A 100% probability of finding the Rydberg atom at a specific position in 3D subwavelength space is achieved under appropriate conditions. This scheme may provide a novel approach for realizing high-precision 3D Rydberg atom localization in experiment.

通过空间光吸收显微镜，我们提出了在（V +Ξ）型原子系统中亚波长三维（3D）Rydberg原子定位的方案。位置相关的原子-场相互作用使原子位置信息可以通过测量探针吸收来获得。通过调整激光场的失谐和拉比频率，发现了一些独特的空间定位模式。在适当的条件下，有100％的概率在3D亚波长空间中的特定位置找到Rydberg原子。该方案可以为在实验中实现高精度3D Rydberg原子定位提供一种新颖的方法。