Few-boson tunneling in a double well with spatially modulated interaction

Abstract

We study few-boson tunneling in a one-dimensional double well with a spatially modulated interaction. The dynamics changes from Rabi oscillations in the non-interacting case to a highly suppressed tunneling for intermediate coupling strengths followed by a revival near the fermionization limit. With extreme interaction inhomogeneity in the regime of strong correlations we observe tunneling between the higher bands. The dynamics is explained on the basis of the few-body spectrum and stationary eigenstates. For higher number of particles, N > 2, it is shown that the inhomogeneity of the interaction can be tuned to generate tunneling resonances. Finally, a tilted double-well and its interplay with the interaction asymmetry is discussed.

arXiv comment10 Pages. Published with minor changes

References in corpus (25)

• Many-Body Physics with Ultracold Gases
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Cold bosonic atoms in optical lattices
• Atomic Scattering in Presence of an External Confinement and a Gas of Impenetrable Bosons
• Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
• Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
• Production of cold molecules via magnetically tunable Feshbach resonances
• Direct Observation of Second Order Atom Tunnelling
• Nonlinear Self-Trapping of Matter Waves in Periodic Potentials
• Single Particle Tunneling in Strongly Driven Double Well Potentials
• Exact quantum dynamics of a bosonic Josephson junction
• Controlling a magnetic Feshbach resonance with laser light
• Few-boson dynamics in double wells: From single-atom to correlated-pair tunneling
• Ultracold Bosons in a Tilted Multi-level Double-Well Potential
• Ultracold Few-Boson Systems in a Double-Well Trap
• Quantum dynamics of a model for two Josephson-coupled Bose--Einstein condensates
• Tunneling dynamics of few bosons in a double well
• Quantum dynamics of attractive versus repulsive bosonic Josephson junctions: Bose-Hubbard and full-Hamiltonian results
• Dynamical Realization of Macroscopic Superposition States of Cold Bosons in a Tilted Double Well
• Quantum dynamics of bosons in a double-well potential: Josephson oscillations, self-trapping and ultralong tunneling times
• Ab-initio determination of Bose-Hubbard parameters for two ultracold atoms in an optical lattice using a three-well potential
• Coherent control of a self-trapped Bose-Einstein condensate
• Quantum dynamics of repulsively bound atom pairs in the Bose-Hubbard model
• Transport of ultracold Bose gases beyond the Gross-Pitaevskii description
• Transport and interaction blockade of cold bosonic atoms in a triple-well potential

Cited by in corpus (16)

• Accurate multi-boson long-time dynamics in triple-well periodic traps
• Two trapped particles interacting by a finite-ranged two-body potential in two spatial dimensions
• Tunneling, self-trapping and manipulation of higher modes of a BEC in a double well
• 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
• Theoretical description of two ultracold atoms in finite 3D optical lattices using realistic interatomic interaction potentials
• Quantum dissipative dynamics of a bistable system in the sub-Ohmic to super-Ohmic regime
• Quench Dynamics of Finite Bosonic Ensembles in Optical Lattices with Spatially Modulated Interactions
• Correlation properties of a three-body bosonic mixture in a harmonic trap
• Optical realization of two-boson tunneling dynamics
• Ground-states of spin-1 bosons in asymmetric double-wells
• Asymptotic population imbalance of an ultracold bosonic ensemble in a driven double-well
• Intra- and interband excitations induced residue decay of the Bose polaron in a one-dimensional double-well
• Decay properties of unstable Tonks-Girardeau gases from a split trap
• Dynamical formation of two-fold fragmented many-body state induced by an impurity in a double-well
• Dynamical control of particle jets from a driven condensate in a one-dimensional lattice with double-well potential