Electromagnetically-induced-Transparency cooling with a tripod structure in a hyperfine trapped ion with mixed-species crystals

authored by

Jenny J. Wu, Pan Yu Hou, Stephen D. Erickson, Adam D. Brandt, Yong Wan, Giorgio Zarantonello, Daniel C. Cole, Andrew C. Wilson, Daniel H. 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 enable 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 Mg+25 by the addition of an extra laser frequency; this method can be applied to any ion with nonzero nuclear spin. Furthermore, we simultaneously EIT cool all axial modes in mixed-species crystals Be+9-Mg+25 and Be+9-Mg+25-Be+9 through the Mg+25 ion. This demonstrates the viability of EIT cooling in architectures where the laser-cooled species can host high-fidelity hyperfine qubits.

External Organisation(s)

National Institute of Standards and Technology (NIST)
University of Colorado Boulder

Type

Article

Journal

Physical Review A

Volume

111

ISSN

2469-9926

Publication date

10.04.2025

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Electronic version(s)

https://doi.org/10.1103/PhysRevA.111.043109 (Access: Open)
https://doi.org/10.48550/arXiv.2408.13407 (Access: Open)