An impurity in a heteronuclear two-component Bose mixture

Abstract

We study the fate of an impurity in an ultracold heteronuclear Bose mixture, focusing on the experimentally relevant case of a ${}^{41}$K-${}^{87}$Rb mixture, with the impurity in a ${}^{41}$K hyperfine state. Our work provides a comprehensive description of an impurity in a BEC mixture with contact interactions across its phase diagram. We present results for the miscible and immiscible regimes, as well as for the impurity in a self-bound quantum droplet. Here, varying the interactions, we find novel, exotic states where the impurity localizes either at the center or at the surface of the droplet.

5 pages and 4 figures, 5 pages and 2 figures (Supplemental material). Updated references

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Cited by in corpus (19)

• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• Dynamical formation of multiple quantum droplets in a Bose-Bose mixture
• Interaction of One-Dimensional Quantum Droplets with Potential Wells and Barriers
• Crossover from attractive to repulsive induced interactions and bound states of two distinguishable Bose polarons
• Impurities in quasi-one-dimensional droplets of binary Bose mixtures
• Non-equilibrium dynamics of dipolar polarons
• Phases and dynamics of quantum droplets in the crossover to two-dimensions
• Phases and dynamics of few fermionic impurities immersed in two-dimensional boson droplets
• Quantum information flow in impurity qubits interacting with Bose-Bose mixtures
• Localization and splitting of a quantum droplet with a potential defect
• Polarons in Binary Bose-Einstein Condensates
• Effective approaches to the dynamical properties of two distinguishable Bose polarons
• Functional renormalisation group approach to the finite-temperature Bose polaron
• Droplet-gas phases and their dynamical formation in particle imbalanced mixtures
• Multicomponent one-dimensional quantum droplets across the mean-field stability regime
• Polaronic dressing of bound states
• Resonantly enhanced superconductivity mediated by spinor condensates
• Weak and strong coupling polarons in binary Bose-Einstein condensates
• Phases and dynamics of an impurity immersed in one-dimensional quantum droplets