Effect of interactions on the localization of a Bose-Einstein condensate in a quasiperiodic lattice

Year: 2007

Authors: Lye JE., Fallani L., Fort C., Guarrera V., Modugno M., Wiersma D., Inguscio M.

Autors Affiliation: Univ Florence, INFM, Dipartimento Fis, LENS, I-50019 Sesto Fiorentino, Italy

Abstract: The transport properties of a Bose-Einstein condensate in a 1D incommensurate bichromatic lattice are investigated both theoretically and experimentally. We observe a blockage of the center of mass motion with low atom number, and a return of motion when the atom number is increased. Solutions of the Gross-Pitaevskii equation show how the localization due to the quasidisorder introduced by the incommensurate bichromatic lattice is affected by the interactions.

Journal/Review: PHYSICAL REVIEW A

Volume: 75 (6)      Pages from: 061603-1  to: 061603-4

KeyWords: superfluid
DOI: 10.1103/PhysRevA.75.061603

Citations: 69
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