Stuttgart 2012 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 22: Quantengase: Wechselwirkungseffekte 1
Q 22.5: Vortrag
Dienstag, 13. März 2012, 11:45–12:00, V7.03
Supersolid Vortex Crystals in Rydberg-dressed Bose-Einstein Condensates — •Fabio Cinti1, Nils Henkel1, Piyush Jain2, Guido Pupillo3,4, and Thomas Pohl1 — 1Max Planck Institute for the Physics of Complex Systems, Dresden — 2University of Alberta, Edmonton, Canada — 3IQOQI, Innsbruck, Austria. — 4Universite' de Strasbourg and CNRS, Strasbourg, France.
We investigate quasi-two-dimensional Bose-Einstein-condensates, in which atoms are dressed to a highly excited Rydberg state. In particular, we study the possibility to create and detect supersolid states via probing the response to trap rotations. Combining results of first-principle Quantum Monte Carlo simulations and simplified mean field calculations, we identify universal scaling laws that permit to estimate experimental parameters for supersolid creation over a wide range of temperatures and particle numbers.
For rapid rotation, the mean field results predict an interesting competition between the supersolid crystal structure and the rotation-induced vortex lattice that gives rise to new phases, including arrays of mesoscopic vortex crystals [1].
[1] N. Henkel, F. Cinti, P. Jain, G. Pupillo and T. Pohl, arXiv:1111.5761