Type
Text
Type
Thesis
Advisor
Dominik A. Schneble. | Thomas H. Bergeman | Thomas C. Weinacht.
Date
2011-08-01
Keywords
Physics | BEC, Bloch oscillations, Bose-Einstein condensate, disorder, interactions, screening
Department
Department of Physics
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/71722
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
This thesis experimentally investigates Bloch oscillations of a Rubidium-87 Bose-Einstein condensate in an disordered optical lattice. The disorder is created by superposing an additional, incommensurate optical lattice to the main lattice. Individually, collisional mean-field interactions between atoms as well as disorder both lead to a damping of the oscillations. However, we observe a competition between the two contributions, which results in an effective reduction of the disorder-induced damping due to mean-field interactions. This observation is consistent with an interaction-induced screening of the potential.
Recommended Citation
Vogt, Matthias Guido, "Bloch Oscillations of a BEC: Competition between Mean-Field Interactions and Disorder" (2011). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 927.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/927