Electromagnetically-Induced-Transparency Cooling with a Tripod Structure in a Hyperfine Trapped Ion with Mixed-Species Crystals

Published

August 22, 2024

Author(s)

Jenny Wu, Pan-Yu Hou, Stephen Erickson, Adam Brandt, Yong Wan, Giorgio Zarantonello, Daniel Cole, Andrew C. Wilson, Daniel Slichter, Dietrich Leibfried

Abstract

Cooling of atomic motion is a crucial tool for many branches of atomic physics, ranging from fundamental physics explorations to quantum information and sensing. For trapped ions, electromagnetically-induced-transparency (EIT) cooling has received attention for the relative speed, low laser power requirements, and broad cooling bandwidth of the technique. However, in applications where the ion used for cooling has hyperfine structure to allow long coherence times, it is difficult to find a closed three-level system in which to perform standard EIT cooling. Here, we demonstrate successful EIT cooling on ^25} Mg^+ by the addition of an extra laser frequency; this method can be applied to any ion with non-zero nuclear spin. Furthermore, we demonstrate simultaneous cooling of all axial modes in mixed-species crystals ^9} Be^+ - ^25} Mg^+ and ^9} Be^+ - ^25} Mg^+ - ^9} Be^+ through the ^25} Mg^+ ion.

Citation

Physical Review A

Pub Type

Journals

Keywords

trapped ions, atomic physics, coherent population trapping, laser cooling

Citation

Wu, J. , Hou, P. , Erickson, S. , Brandt, A. , Wan, Y. , Zarantonello, G. , Cole, D. , Wilson, A. , Slichter, D. and Leibfried, D. (2024), Electromagnetically-Induced-Transparency Cooling with a Tripod Structure in a Hyperfine Trapped Ion with Mixed-Species Crystals, Physical Review A (Accessed October 6, 2025)