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Q: Fachverband Quantenoptik und Photonik

Q 34: Poster 1

Q 34.40: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.I+II

Rydberg-dressed Bose-Einstein condensates — •Nils Henkel¹, Fabian Maucher¹, Fabio Cinti¹, Rejish Nath⁴, Mark Saffmann², Wieslaw Krolikowski³, Stefan Skupin^1,5, and Thomas Pohl¹ — ¹Max Planck Institute for the Physics of Complex Systems, Dresden — ²University of Wisconsin, Madison — ³Australian National University, Canberra — ⁴Institute for Quantum Optics and Quantum Information, Innsbruck — ⁵Friedrich Schiller University, Jena

We study Bose-Einstein condensates where atoms are far off-resonantly coupled to highly excited Rydberg states with strong van-der-Waals interactions. This Rydberg dressing leads to effective soft-core interactions with striking consequences: in the case of attractive Rydberg states, they allow for the preparation of three-dimensional self-trapped solitons; the matter-wave analogue of so-called light-bullets. For repulsive Rydberg states, the interaction gives rise to a transition from a superfluid to a supersolid state. Both effects are shown to occur at experimentally accessible parameters.