• Open Access

Controlling the nature of a charged impurity in a bath of Feshbach dimers

Henrik Hirzler, Eleanor Trimby, Rianne S. Lous, Gerrit C. Groenenboom, Rene Gerritsma, and Jesús Pérez-Ríos
Phys. Rev. Research 2, 033232 – Published 10 August 2020

Abstract

We theoretically study the dynamics of a trapped ion that is immersed in an ultracold gas of weakly bound atomic dimers created by a Feshbach resonance. Using quasiclassical simulations, we find a crossover from dimer dissociation to molecular ion formation depending on the binding energy of the dimers. The location of the crossover strongly depends on the collision energy and the time-dependent fields of the Paul trap. Deeply bound dimers lead to fast molecular ion formation, with rates approaching the Langevin collision rate ΓL4.8×109cm3s1. The kinetic energies of the created molecular ions have a median below 1mK, such that they will stay confined in the ion trap. We conclude that interacting ions and Feshbach molecules may provide an alternative approach towards the creation of ultracold molecular ions with applications in precision spectroscopy and quantum chemistry.

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  • Received 29 May 2020
  • Accepted 20 July 2020

DOI:https://doi.org/10.1103/PhysRevResearch.2.033232

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Henrik Hirzler1, Eleanor Trimby1, Rianne S. Lous1, Gerrit C. Groenenboom2, Rene Gerritsma1, and Jesús Pérez-Ríos2,3

  • 1Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
  • 2Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
  • 3Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany

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Vol. 2, Iss. 3 — August - October 2020

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