Analysis of Localization Phenomena in Weakly Interacting Disordered Lattice Gases

Abstract

Disorder plays a crucial role in many systems particularly in solid state physics. However, the disorder in a particular system can usually not be chosen or controlled. We show that the unique control available for ultracold atomic gases may be used for the production and observation of disordered quantum degenerate gases. A detailed analysis of localization effects for two possible realizations of a disordered potential is presented. In a theoretical analysis clear localization effects are observed when a superlattice is used to provide a quasiperiodic disorder. The effects of localization are analyzed by investigating the superfluid fraction and the localization length within the system. The theoretical analysis in this paper paves a clear path for the future observation of Anderson-like localization in disordered quantum gases.

9 pages, 13 figures

References in corpus (2)

• Localization of Matter Waves in 2D-Disordered Optical Potentials
• Three-dimensional strong localization of matter waves by scattering from atoms in a lattice with a confinement-induced resonance

Cited by in corpus (7)

• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Effect of interactions on the localization of a Bose-Einstein condensate in a quasi-periodic lattice
• Disorder versus the Mermin-Wagner-Hohenberg effect: From classical spin systems to ultracold atomic gases
• Disorder-Induced Order in Two-Component Bose-Einstein Condensates
• Dynamics of Bloch Oscillations in Disordered Lattice Potentials
• Dynamics of Localization Phenomena for Hardcore Bosons in Optical Lattices
• Bose-Einstein condensates in disordered potentials