Hannover 2010 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 9: Ultra-Cold Atoms, Ions and BEC II (with Q)
A 9.2: Vortrag
Mittwoch, 10. März 2010, 10:45–11:00, F 303
Few-boson tunneling in a double well with spatially modulated interaction. — •Budhaditya Chatterjee1, Ioannis Brouzos2, Sascha Zöllner3, and Peter Schmelcher2 — 1Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany — 2Zentrum für Optische Quantentechnologien , Universität Hamburg, Luruper Chaussee 149, Gebäude 69, 22761 Hamburg, Germany — 3Niels Bohr International Academy, Niels Bohr Institute, Blegdamsvej 17, 2100 Copenhagen, Denmark
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. The dynamics is explained on the basis of the few-body spectrum and stationary eigenstates. For higher number of particles, N≥ 3 it is shown that the inhomogeneity of interaction can be tuned to generate tunneling resonances. Finally a tilted double-well and its interplay with the interaction asymmetry is discussed.