Ionic polaron in a Bose-Einstein condensate

Abstract

The presence of strong interactions in a many-body quantum system can lead to a variety of exotic effects. Here we show that even in a comparatively simple setup consisting of a charged impurity in a weakly interacting bosonic medium the competition of length scales gives rise to a highly correlated mesoscopic state. Using quantum Monte Carlo simulations, we unravel its vastly different polaronic properties compared to neutral quantum impurities. Moreover, we identify a transition between the regime amenable to conventional perturbative treatment in the limit of weak atom-ion interactions and a many-body bound state with vanishing quasi-particle residue composed of hundreds of atoms. In order to analyze the structure of the corresponding states we examine the atom-ion and atom-atom correlation functions which both show nontrivial properties. Our findings are directly relevant to experiments using hybrid atom-ion setups that have recently attained the ultracold regime.

published version, 10 pages, 5 figures, 1 table

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Cited by in corpus (37)

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• Observation of Chemical Reactions between a Trapped Ion and Ultracold Feshbach Dimers
• Cold chemistry: a few-body perspective on impurity physics of a single ion in an ultracold bath
• Many-body bound states and induced interactions of charged impurities in a bosonic bath
• Mediated interactions between ions in quantum degenerate gases
• Interactions mediated by atoms, photons, electrons, and excitons
• Finite-range effects in the unitary Fermi polaron
• Quantum-limited thermometry of a Fermi gas with a charged spin particle
• Phase diagram for strong-coupling Bose polarons
• Buffer gas cooling of ions in time-dependent traps using ultracold atoms
• Ultracold ion-atom experiments: cooling, chemistry, and quantum effects
• Dynamics of a trapped ion in a quantum gas: effects of particle statistics
• Polaron-Depleton Transition in the Yrast Excitations of a One-Dimensional Bose Gas with a Mobile Impurity
• Fermi polaron in low-density spin-polarized neutron matter
• A mobile ion in a Fermi sea
• Modified mean field ansatz for charged polarons in a Bose-Einstein condensate
• Suppression of polaron self-localization by correlations
• Fermi polaron in atom-ion hybrid systems
• Self-stabilized Bose polarons
• Trap-induced atom-ion complexes: a time-independent approach
• Cold atom-ion systems in radiofrequency multipole traps: event-drive molecular dynamics and stochastic simulations
• High-accuracy Rb${}_2^{+}$ interaction potentials based on coupled cluster calculations
• Properties of fermionic systems with the Path-integral ground state method
• Cooling dynamics of a free ion in a Bose-Einstein condensate
• Phonon-mediated quantum gates in trapped ions coupled to an ultracold atomic gas
• Magnetic monopole induced polarons in atomic superlattices
• Fast Single-shot Imaging of Individual Ions via Homodyne Detection of Rydberg-Blockade-Induced Absorption
• Dynamics of a Mobile Ion in a Bose-Einstein Condensate
• Polaronic dressing of bound states
• False signals of chaos from quantum probes
• Properties of a static dipolar impurity in a 2D dipolar BEC
• Universality in Ionic Three-body Systems Near an Ion-atom Feshbach Resonance
• Electric field dissociation of weakly bound molecular ions
• Optical response of the supersolid polaron