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A: Fachverband Atomphysik

A 3: Precision spectroscopy of atoms and ions I (joint session A/Q)

A 3.1: Vortrag

Montag, 14. März 2022, 14:00–14:15, A-H2

Sympathetic cooling of macroscopically separated ions via image-current coupling — •Christian Will¹, Matthew Bohman^1,2, Markus Wiesinger^1,2, Fatma Abbass⁴, Jack Devlin^2,7, Stefan Erlewein^2,7, Markus Fleck^2,8, Julia Jäger^1,7, Barbara Latacz², Peter Micke⁷, Andreas Mooser¹, Daniel Popper⁴, Elise Wursten^1,2,7, Klaus Blaum¹, Yasuyuki Matsuda⁸, Christian Ospelkaus^5,6, Wolfgang Quint⁹, Jochen Walz^3,4, Christian Smorra^2,4, and Stefan Ulmer² — ¹Max-Planck-Institut für Kernphysik — ²RIKEN — ³Helmholtz-Institut Mainz — ⁴Johannes Gutenberg-Universität Mainz — ⁵Leibniz Universität Hannover — ⁶Physikalisch-Technische Bundesanstalt — ⁷CERN — ⁸University of Tokyo — ⁹GSI Helmholtzzentrum für Schwerionenforschung GmbH

A general-purpose cooling technique that achieves mK-temperatures for species without suitable laser transitions is of interest for a wide range of AMO experiments with trapped charged particles. We present recently published results on sympathetically cooling a single proton in a Penning trap with laser-cooled beryllium ions located in a different trap (Bohman et al., Nature, 2021). Coupling is achieved via image currents induced in adjacent trap electrodes, allowing a macroscopic separation between the two species. This techniques allows cooling of any trapped charged particle, with a particular focus on exotic species such as antimatter or highly-charged ions.

This talk will cover the most recent experimental results as well as future prospects based on simulation work.