Exploring disorder physics with Bose-Einstein condensates

Year: 2011

Authors: Modugno G., D\’Errico C., Deissler B., Lucioni E., Modugno M., Moratti M., Roati G., Tanzi L., Zaccanti M., Inguscio M.

Autors Affiliation: LENS and Dipartimento di Fisica E Astronomia, Università di Firenze, CNR-INO, Sesto Fiorentino, 50019, Italy; Institut Für Quantenmaterie, University of Ulm, Germany; Department of Theoretical Physics and History of Science, UPV-EHU, Bilbao, 48011, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, 48011, Spain; Institut Für Quantenoptik Und Quanteninformation, Innsbruck, Austria

Abstract: We study various aspects of the physics of disordered systems by employing a Bose-Einstein condensate with tunable interactions and a quasiperiodic optical lattice. In particular, we characterize the superfluid and insulating phases that appear for weak repulsive interactions and we study the diffusion in the presence of disorder and nonlinearities. Our work gives answer to long-standing questions about the complex interplay of disorder and interactions in bosonic systems, and calls for further investigations.

Conference title: 20th International Conference on Laser Spectroscopy, ICOLS 2011

More Information: – et al.; HighFinesse; Nutzfahrzeuge; Radiant Dyes Laser; Schafter + Kirchhoff GmbH; THORLABS
KeyWords: Laser spectroscopy; Optical lattices; Statistical mechanics, Bose-Einstein condensates; Bosonic systems; Disordered system; Insulating phasis; Quasi-periodic; Repulsive interactions, Bose-Einstein condensation