Motional-ground-state cooling outside the Lamb-Dicke regime

被引：34

作者：

Yu, Y. ^{[1
]}

Hutzler, N. R.

Zhang, J. T.

Liu, L. R.

Hood, J. D.

Rosenband, T.

Ni, K. -K. ^{[1
]}

机构：

[1] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW A | 2018年 / 97卷 / 06期

关键词：

NEUTRAL ATOMS; SPIN-EXCHANGE; TRAPPED ATOM; MOLECULES; DENSITY; ARRAYS; CESIUM;

D O I：

10.1103/PhysRevA.97.063423

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 93.5(7)% after 53 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 three-dimensional motional ground state is possible, even without tight confinement and low initial temperature.

引用

页数：5

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