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A: Fachverband Atomphysik

A 19: Ultracold atoms III: Manipulation and detection / Rydbergatoms (with Q)

A 19.9: Talk

Wednesday, March 4, 2009, 18:30–18:45, Audi-B

Exciton transport in ordered and disordered samples of cold Rydberg atoms — Torsten Scholak, •Thomas Wellens, and Andreas Buchleitner — Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg

We study coherent dipolar energy transfer between resonant levels of Rydberg atoms. We determine the transport properties by examining the spectral structure and the associated eigenfunctions. To highlight the impact of disorder on the Rydberg exciton transport, we introduce a disorder parameter allowing us to switch continuously from an ordered to a completely disordered sample of atoms. Special attention is dedicated to the transition from diffusive to non-diffusive transport, as well as to the metamorphosis of the nearest-neighbor level spacing distribution from Wigner to Poisson.