Cooling Dynamics of a Single Trapped Ion via Elastic Collisions with Small-Mass Atoms

Shinsuke Haze, Mizuki Sasakawa, Ryoichi Saito, Ryosuke Nakai, and Takashi Mukaiyama

Phys. Rev. Lett. 120, 043401 – Published 24 January 2018

Abstract

We demonstrated sympathetic cooling of a single ion in a buffer gas of ultracold atoms with small mass. Efficient collisional cooling was realized by suppressing collision-induced heating. We attempt to explain the experimental results with a simple rate equation model and provide a quantitative discussion of the cooling efficiency per collision. The knowledge we obtained in this work is an important ingredient for advancing the technique of sympathetic cooling of ions with neutral atoms.

Received 26 October 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.043401

Physics Subject Headings (PhySH)

Chemical reactions Fermi gases Ultracold collisions

Atomic, Molecular & Optical

Authors & Affiliations

Shinsuke Haze^1,*, Mizuki Sasakawa¹, Ryoichi Saito¹, Ryosuke Nakai¹, and Takashi Mukaiyama^2,3

¹Institute for Laser Science, University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
²Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
³PRESTO, Japan Science and Technology Agency, Honcho, Kawaguchi, Saitama 332-0012, Japan