Material-barrier Tunneling in One-dimensional Few-boson Mixtures

Abstract

We study the quantum dynamics of strongly interacting few-boson mixtures in one-dimensional traps. If one species is strongly localized compared to the other (e.g., much heavier), it can serve as an effective potential barrier for that mobile component. Near the limit of infinite localization, we map this to a system of identical bosons in a double well. For realistic localization, the backaction of the light species on the "barrier" atoms is explained--to lowest order--in terms of an induced attraction between these. Even in equilibrium, this may outweigh the bare intra-species interaction, leading to unexpected correlated states. Remarkably, the backaction drastically affects the inter-species dynamics, such as the tunneling of an attractively bound pair of fermionized atoms.

10 pages, 3 figures

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Cited by in corpus (22)

• Non-Equilibrium Quantum Dynamics of Ultra-Cold Atomic Mixtures: the Multi-Layer Multi-Configuration Time-Dependent Hartree Method for Bosons
• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• Correlation Effects in the Quench-Induced Phase Separation Dynamics of a Two-Species Ultracold Quantum Gas
• Distinguishability, degeneracy and correlations in three harmonically trapped bosons in one-dimension
• Quenching small quantum gases: Genesis of the orthogonality catastrophe
• Quantum correlations and spatial localization in one-dimensional ultracold bosonic mixtures
• Many-Body Expansion Dynamics of a Bose-Fermi Mixture Confined in an Optical Lattice
• Quantum gas mixtures in different correlation regimes
• Correlated Tunneling Dynamics of an Ultracold Fermi-Fermi Mixture Confined in a Double-Well
• Entanglement-assisted tunneling dynamics of impurities in a double well immersed in a bath of lattice trapped bosons
• Many-body collisional dynamics of impurities injected into a double-well trapped Bose-Einstein condensate
• Few-boson tunneling dynamics of strongly correlated binary mixtures in a double-well
• Counterflow dynamics of two correlated impurities immersed in a bosonic gas
• Impurity induced quantum chaos for an ultracold bosonic ensemble in a double-well
• State engineering of impurities in a lattice by coupling to a Bose gas
• Correlation induced localization of lattice trapped bosons coupled to a Bose-Einstein condensate
• Interaction induced single impurity tunneling in a binary mixture of trapped ultracold bosons
• Hard-core Bose-Fermi mixture in one-dimensional split traps
• Bunching-antibunching crossover in harmonically trapped few-body Bose-Fermi mixtures
• Interaction-controlled impurity transport in trapped mixtures of ultracold bosons
• Entangling lattice-trapped bosons with a free impurity: impact on stationary and dynamical properties
• Dynamical formation of two-fold fragmented many-body state induced by an impurity in a double-well