An ionic impurity in a Bose-Einstein condensate at sub-microkelvin temperatures

Abstract

Rydberg atoms immersed in a Bose-Einstein condensate interact with the quantum gas via electron-atom and ion-atom interaction. To suppress the typically dominant electron-neutral interaction, Rydberg states with principal quantum number up to $n=190$ are excited from a dense and tightly trapped micron-sized condensate. This allows us to explore a regime where the Rydberg orbit exceeds the size of the atomic sample by far. In this case, a detailed lineshape analysis of the Rydberg excitation spectrum provides clear evidence for ion-atom interaction at temperatures well below a microkelvin. Our results may open up ways to enter the quantum regime of ion-atom scattering for the exploration of charged quantum impurities and associated polaron physics.

arXiv comment9 pages, 6 figures

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Cited by in corpus (62)

• Rydberg atom quantum technologies
• Cold hybrid ion-atom systems
• Analyzing a Bose polaron across resonant interactions
• Buffer gas cooling of a trapped ion to the quantum regime
• Quantum spin dynamics of individual neutral impurities coupled to a Bose-Einstein condensate
• Ultralong-range Rydberg molecules
• Ionic polaron in a Bose-Einstein condensate
• Trilobites, butterflies, and other exotic specimens of long-range Rydberg molecules
• Optical Traps for sympathetic Cooling of Ions with ultracold neutral Atoms
• Transport of a single cold ion immersed in a Bose-Einstein condensate
• Spatial imaging of a novel type of molecular ions
• Charged polarons and molecules in a Bose-Einstein Condensate
• Dynamics of a single ion spin impurity in a spin-polarized atomic bath
• Observation of Interactions between Trapped Ions and Ultracold Rydberg Atoms
• Quantum Rydberg Central Spin Model
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• Improving Efficiency of Sympathetic Cooling in Atom-Ion and Atom-Atom Confined Collisions
• Ultracold ion-atom experiments: cooling, chemistry, and quantum effects
• Controlled doping of a bosonic quantum gas with single neutral atoms
• Rydberg atom-ion collisions in cold environments
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• A mobile ion in a Fermi sea
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• Ultracold Interactions between Ions and Polar Molecules
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• Limitations of coupled cluster approximations for highlyaccurate investigations of Rb${}_2^{+}$
• Bound states of an ultracold atom interacting with a set of stationary impurities
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• Quantum suppression of cold reactions far from the s-wave energy limit
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• Quantum reactive scattering in the long-range ion-dipole potential
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