Few-boson tunneling dynamics of strongly correlated binary mixtures in a double-well

Abstract

We explore the tunneling dynamics of strongly correlated bosonic mixtures in a one-dimensional double-well. The role of the inter- and intra-species interactions and their interplay is investigated using the numerically exact Multi-Configuration Time dependent Hartree (MCTDH) method. The dynamics is studied for three initial configurations: complete and partial population imbalance and a phase separated state. Increasing the inter-species interaction leads to a strong increase of the tunneling time period analogous to the quantum self-trapping for condensates. The intra-species repulsion can suppress or enhance the tunneling period depending on the strength of the inter-species correlations as well as the initial configuration. Completely correlated tunneling between the two species and within the same species as well as mechanisms of species separation and counterflow are revealed. These effects are explained by studying the many-body energy spectra as well as the properties of the contributing stationary states.

Significant changes from the previous version. This version accepted for publication

References in corpus (21)

• Many-Body Physics with Ultracold Gases
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Single Particle Tunneling in Strongly Driven Double Well Potentials
• Degenerate Bose-Bose mixture in a three-dimensional optical lattice
• Instabilities in binary mixtures of one-dimensional quantum degenerate gases
• Few-boson dynamics in double wells: From single-atom to correlated-pair tunneling
• Soluble Models of Strongly Interacting Ultracold Gas Mixtures in Tight Waveguides
• Spin-charge separation in two-component Bose-gases
• Composite fermionization of 1-D Bose-Bose mixtures
• Tunneling dynamics of few bosons in a double well
• Phase separation in a two species Bose mixture
• Phase separations of bosonic mixtures in optical lattices from macroscopic to microscopic scales
• Ground-state properties of interacting two-component Bose gases in a one-dimensional harmonic trap
• Ground-state properties of interacting two-component Bose gases in a hard-wall trap
• Quantum dynamics of repulsively bound atom pairs in the Bose-Hubbard model
• Material-barrier Tunneling in One-dimensional Few-boson Mixtures
• Dynamics of a two-species Bose-Einstein condensate in a double well
• Detecting paired and counterflow superfluidity via dipole oscillations
• Binding between two-component bosons in one dimension
• Quantum Bose Josephson Junction with binary mixtures of BECs

Cited by in corpus (11)

• One-dimensional mixtures of several ultracold atoms: a review
• 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
• Measure synchronization in a two-species bosonic Josephson junction
• Pair tunneling of two atoms out of a trap
• Solvable Model of a Mixture of Bose-Einstein Condensates
• Quantum properties of a binary bosonic mixture in a double well
• The multi-configurational time-dependent Hartree approach in optimized second quantization: imaginary time propagation and particle number conservation
• Tunneling dynamics of correlated bosons in a double well potential
• Interaction-controlled impurity transport in trapped mixtures of ultracold bosons