Motional Ground State Cooling Outside the Lamb-Dicke Regime
Atomic Physics
2018-07-04 v2 Quantum Gases
Chemical Physics
Abstract
We report Raman sideband cooling of a single sodium atom to its three-dimensional motional ground state in an optical tweezer. Despite a large Lamb-Dicke parameter, high initial temperature, and large differential light shifts between the excited state and the ground state, we achieve a ground state population of % after ms of cooling. Our technique includes addressing high-order sidebands, where several motional quanta are removed by a single laser pulse, and fast modulation of the optical tweezer intensity. We demonstrate that Raman sideband cooling to the 3D motional ground state is possible, even without tight confinement and low initial temperature.
Keywords
Cite
@article{arxiv.1708.03296,
title = {Motional Ground State Cooling Outside the Lamb-Dicke Regime},
author = {Yichao Yu and Nicholas R. Hutzler and Jessie T. Zhang and Lee R. Liu and Jonathan D. Hood and Till Rosenband and Kang-Kuen Ni},
journal= {arXiv preprint arXiv:1708.03296},
year = {2018}
}
Comments
5 pages, 4 figures