Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.6: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
Exchange-driven crystallization of Rydberg-dressed atoms — •Fabio Cinti1, Massimo Boninsegni2, Nils Henkel1, and Thomas Pohl1 — 1Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany — 2Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2J1
We study the physics of Bosonic atoms with long-range interactions, induced by optical dressing to high-lying Rydberg states. Using first-principle quantum Monte Carlo techniques, we construct the finite-temperature phase diagram, which is shown to be universal over a wide range of experimentally relevant parameters that promote superfluid, supersolid as well as insulating crystal phases. Surprisingly, we find that quantum exchange, which commonly tends to cause delocalization, stabilizes the crystalline phase as compared to an analogous quantum system composed distinguishable particles. We provide an intuitive picture for the mechanism behind this unexpected behavior and draw a connection to the peculiar shape of the interaction potential induced by Rydberg-dressing.