Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session S11: Focus Session: Collisions in Extreme Settings
10:30 AM–12:30 PM,
Thursday, June 2, 2022
Room: Grand Ballroom E
Chair: Svetlana Kotochigova, Temple
Abstract: S11.00004 : Feshbach resonances between a single ion and ultracold atoms
11:42 AM–11:54 AM
Presenter:
Pascal Weckesser
(Max Planck Institute for Quantum Optics, 85748 Garching, Germany and Albert-Ludwigs-Universitaet Freiburg, Physikalisches Institut, 79104 Freiburg, Germany)
Authors:
Pascal Weckesser
(Max Planck Institute for Quantum Optics, 85748 Garching, Germany and Albert-Ludwigs-Universitaet Freiburg, Physikalisches Institut, 79104 Freiburg, Germany)
Fabian Thielemann
(Albert-Ludwigs-Universitaet Freiburg, Physikalisches Institut, 79104 Freiburg, Germany)
Leon Karpa
(Albert-Ludwigs-Universitaet Freiburg, Physikalisches Institut, 79104 Freiburg, Germany)
Thomas Walker
(Albert-Ludwigs-Universitaet Freiburg, Physikalisches Institut, 79104 Freiburg, Germany)
Tobias Schaetz
(Albert-Ludwigs-Universitaet Freiburg, Physikalisches Institut, 79104 Freiburg, Germany)
Using these techniques, we demonstrate the first observation of Feshbach resonances between atoms and ions [3]. We find 11 resonances by magnetic-field dependent ion loss spectroscopy and identify four of them as s-wave resonances. Operating with lower densities we suppress inelastic three-body recombination, allowing us to apply Feshbach resonances to control the ion’s sympathetic cooling rate - a first step towards reaching atom-ion s-wave scattering.
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