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|Title:||Bloch Oscillations of a BEC: Competition between Mean-Field Interactions and Disorder|
|Authors:||Dominik A. Schneble.|
Vogt, Matthias Guido
Department of Physics
Thomas H. Bergeman
Thomas C. Weinacht.
|Publisher:||The Graduate School, Stony Brook University: Stony Brook, NY.|
|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.|
|Appears in Collections:||Stony Brook Theses and Dissertations Collection|
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|Vogt_grad.sunysb_0771M_10690.pdf||1.91 MB||Adobe PDF|
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