Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.8: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
Supersolidity in rotating Rydberg-dressed Bose-Einstein condensates — •Nils Henkel1, Fabio Cinti1, Piyush Jain2, Guido Pupillo3,4, and Thomas Pohl1 — 1Max Planck Institute for the Physics of Complex Systems, Dresden — 2Department of Physics, University of Alberta, Edmonton, Alberta, Canada — 3IQOQI and Institute for Theoretical Physics, University of Innsbruck, 6020 Innsbruck, Austria — 4ISIS and IPCMS, Université de Strasbourg and CNRS, Strasbourg, France
We study two-dimensionally confined Bose-Einstein condensates in which long-range soft-core interactions are induced by optical dressing to high-lying Rydberg states [1]. Based on Quantum Monte Carlo simulations, we demonstrate that this system facilitates the preparation of supersolid states and show that many of their features can be described within a simplified mean field approach. Using the latter we investigate the rotation-induced formation of vortex structures [2]. Our calculations reveal an interesting interplay of length scales of the supersolid crystal and the vortex lattice which leads to a rich spectrum of spatial patterns. For certain parameters we find a commensurate vortex lattice superimposed on the underlying supersolid crystal, which provides an experimental means to probe superfluidity and thereby to verify supersolidity in such systems.
[1] N. Henkel, R. Nath and T. Pohl, Phys. Rev. Lett. 106, 195302
(2010)
N. Henkel et al., Phys. Rev. Lett. 108, 265301 (2012)