Image-current mediated sympathetic laser cooling of a single proton in a Penning trap down to 170 mK axial temperature Article Swipe

PDF

Related Concepts

Penning trap Trap (plumbing) Atomic physics Proton Laser Laser cooling Current (fluid) Materials science Physics Nuclear physics Optics Electron Thermodynamics Meteorology

C. Will , M. Wiesinger , P. Micke , H. Yildiz , Tom Driscoll , S. Kommu , F. Abbass , B. P. Arndt , B. B. Bauer , Stefan Erlewein , M. Fleck , J. I. Jäger , B. M. Latacz , A. Mooser , D. Schweitzer , G. Umbrazunas , E. Wursten , K. Blaum , J. A. Devlin , C. Ospelkaus , W. Quint , A. Soter , J. Walz , C. Smorra , S. Ulmer ·

YOU? · · 2023 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2310.10208 · OA: W4387724807

We demonstrate a new temperature record for image-current mediated sympathetic cooling of a single proton in a cryogenic Penning trap by laser-cooled $^9$Be$^+$. An axial mode temperature of 170 mK is reached, which is a 15-fold improvement compared to the previous best value. Our cooling technique is applicable to any charged particle, so that the measurements presented here constitute a milestone towards the next generation of high-precision Penning-trap measurements with exotic particles.