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arXiv · 2304.04741

Nanophotonic cavity cooling of a single atom

Chenwei Lv·Ming Zhu·Sambit Banerjee·Chen-Lung Hung
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Abstract

We investigate external and internal dynamics of a two-level atom strongly coupled to a weakly pumped nanophotonic cavity. We calculate the dipole force, friction force, and stochastic force due to the cavity pump field, and show that a three-dimensional cooling region exists near the surface of a cavity. Using a two-color evanescent field trap as an example, we perform three-dimensional Monte-Carlo simulations to demonstrate efficient loading of single atoms into a trap by momentum diffusion, and the stability of cavity cooling near the trap center. Our analyses show that cavity cooling can be a promising method for directly loading cold atoms from free-space into a surface micro-trap. We further discuss the impact of pump intensity on atom trapping and loading efficiency.

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Chenwei Lv, Ming Zhu, Sambit Banerjee, Chen-Lung Hung. 2023-04-10. Nanophotonic cavity cooling of a single atom. https://arxiv.org/abs/2304.04741

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