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

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

2010-03-26

arxiv.org/abs/1003.5155v2

Phys. Rev. A 82, 043619 (2010)

Physics

Condensed Matter

Quantum Gases

10 Pages. Published with minor changes

Scientific paper

10.1103/PhysRevA.82.043619

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.

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