Instabilities of a Bose-Einstein condensate in a periodic potential: an experimental investigation

Year: 2004

Authors: Cristiani M., Morsch O., Malossi N., Jona-Lasinio M., Anderlini M., Courtade E., Arimondo E.

Autors Affiliation: Univ Pisa, Dipartimento Fis E Fermi, Ist Nazl Fis Mat, I-56127 Pisa, Italy

Abstract: By accelerating a Bose-Einstein condensate in a controlled way across the edge of the Brillouin zone of a 1D optical lattice, we investigate the stability of the condensate in the vicinity of the zone edge. Through an analysis of the visibility of the interference pattern after a time-of-flight and the widths of the interference peaks, we characterize the onset of instability as the acceleration of the lattice is decreased. We briefly discuss the significance of our results with respect to recent theoretical work. (C) 2004 Optical Society of America.

Journal/Review: OPTICS EXPRESS

Volume: 12 (1)      Pages from: 4  to: 10

KeyWords: Optical Lattices; Bose-Einstein condensation;
DOI: 10.1364/OPEX.12.000004

Citations: 63
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