Crossover from attractive to repulsive induced interactions and bound states of two distinguishable Bose polarons

Abstract

We study the impact of induced correlations and quasiparticle properties by immersing two distinguishable impurities in a harmonically trapped bosonic medium. It is found that when the impurities couple both either repulsively or attractively to their host, the latter mediates a two-body correlated behavior between them. In the reverse case, namely the impurities interact oppositely with the host, they feature anti-bunching. Monitoring the impurities relative distance and constructing an effective two-body model to be compared with the full many-body calculations, we are able to associate the induced (anti-) correlated behavior of the impurities with the presence of attractive (repulsive) induced interactions. Furthermore, we capture the formation of a bipolaron and trimer state in the strongly attractive regime. The trimer refers to the correlated behavior of two impurities and a representative atom of the bosonic medium and it is characterized by an ellipsoidal shape of the three-body correlation function. Our results open the way for controlling polaron induced correlations and creating relevant bound states.

34 pages, 11 figures

References in corpus (21)

• Many-Body Physics with Ultracold Gases
• Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
• Quantum degenerate two-species Fermi-Fermi mixture coexisting with a Bose-Einstein condensate
• Reduced density matrices and coherence of trapped interacting bosons
• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• Ideal n-body correlations with massive particles
• Polaronic atom-trimer continuity in three-component Fermi gases
• Environment-induced two-mode entanglement in quantum Brownian motion
• Bipolarons and multi-polarons consisting of impurity atoms in a Bose-Einstein condensate
• Many-body bound states and induced interactions of charged impurities in a bosonic bath
• Induced pairing of fermionic impurities in a one-dimensional strongly correlated Bose gas
• Field-theoretical approach to the Casimir-like interaction in a one-dimensional Bose gas
• Magnetic impurity in a one-dimensional few-fermion system
• Inducing spin-order with an impurity: phase diagram of the magnetic Bose polaron
• The effect of boson-boson interaction on the Bipolaron formation
• Non-Markovian Dynamics and Entanglement in Quantum Brownian Motion
• Counterflow dynamics of two correlated impurities immersed in a bosonic gas
• Control of anomalous diffusion of a Bose polaron
• Mobile impurities interacting with a few one-dimensional lattice bosons
• Interaction-controlled impurity transport in trapped mixtures of ultracold bosons
• A full view on the dynamics of an impurity coupled to two one-dimensional fermionic baths

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• Interactions mediated by atoms, photons, electrons, and excitons
• Bound impurities in a one-dimensional Bose lattice gas: low-energy properties and quench-induced dynamics
• Engineering impurity Bell states through coupling with a quantum bath
• Quantum correlations and spatial localization in trapped one-dimensional ultra-cold Bose-Bose-Bose mixtures
• Effective approaches to the dynamical properties of two distinguishable Bose polarons
• Few particles with an impurity in a one-dimensional harmonic trap
• Correlated decoherence and thermometry with mobile impurities in a 1D Fermi gas
• Multicomponent one-dimensional quantum droplets across the mean-field stability regime
• Effective two- and three-body interactions between dressed impurities in a tilted double-well potential
• Competition of light- and phonon-dressing in microwave-dressed Bose polarons
• Dimensional crossover of bound complexes in a two-species Bose-Hubbard lattice: Correlations and dynamics
• Phases and dynamics of an impurity immersed in one-dimensional quantum droplets