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arXiv · 2210.06198

Enhanced dark-state sideband cooling in trapped atoms via photon-mediated dipole-dipole interactions

Chung-Hsien Wang·Yi-Cheng Wang·Chi-Chih Chen·Chun-Che Wang·H. H. Jen
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Abstract

Resolved sideband cooling provides a crucial step in subrecoil cooling the trapped atoms toward their motional ground state, which is essential in atom-based quantum technologies. Here we present an enhanced dark-state sideband cooling in trapped atoms utilizing photon-mediated dipole-dipole interactions among them. By placing the atoms at the magic interparticle distances, we manifest an outperformed cooling behavior in the target atom, which surpasses the limit that a single atom permits. We further investigate various atomic configurations in a multiatom setup with a laser detuning and different light polarization angles, where multiple magic spacings can be identified and a moderate improvement in cooling performance is predicted as the number of atoms increases. Our results provide insights to subrecoil cooling of atoms with collective and light-induced long-range dipole-dipole interactions, and pave the way toward implementing genuine quantum operations in multiple quantum registers.

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Chung-Hsien Wang, Yi-Cheng Wang, Chi-Chih Chen, Chun-Che Wang, H. H. Jen. 2022-10-12. Enhanced dark-state sideband cooling in trapped atoms via photon-mediated dipole-dipole interactions. https://doi.org/10.1103/physreva.107.023117

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