Few-Boson Dynamics in Double Wells: From Single-Atom to Correlated Pair Tunneling

2007/09/30 by Sascha Zöllner, Hans‐Dieter Meyer, Hans-Dieter Meyer +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum many-body systems #Quantum, superfluid, helium dynamics #cond-mat.other #quant-ph

paper · pdf · doi:10.1103/physrevlett.100.040401

published as Phys. Rev. Lett. 100, 040401 (2008) · small revision changes; shortened

arxiv created 2008/01/29 · openalex publication_date 2008/01/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate few-boson tunneling in a one-dimensional double well, covering the full crossover from weak interactions to the fermionization limit of strong correlations. Based on exact quantum-dynamical calculations, it is found that the tunneling dynamics of two atoms evolves from Rabi oscillations to correlated pair tunneling as we increase the interaction strength. Near the fermionization limit, fragmented-pair tunneling is observed and analyzed in terms of the population imbalance and two-body correlations. For more atoms, the tunneling dynamics near fermionization is shown to be sensitive to both atom number and initial configuration.

Citations

• Excitations of few-boson systems in one-dimensional harmonic and double wells
• Low-density, one-dimensional quantum gases in a split trap
• Exact Coherent States of a Harmonically Confined Tonks-Girardeau Gas
• Nonlinear Self-Trapping of Matter Waves in Periodic Potentials
• Repulsively bound atom pairs in an optical lattice