Morsch, O. and Müller, J. H. and Cristiani, M. and Ciampini, D. and Arimondo, E. Bloch oscillations and mean-field effects of Bose-Einstein condensates in 1-D optical lattices. Physical review letters (140402). ISSN 0031-9007
Full text not available from this repository.Abstract
We have loaded Bose-Einstein condensates into one-dimensional, off-resonant optical lattices and accelerated them by chirping the frequency difference between the two lattice beams. For small values of the lattice well-depth, Bloch oscillations were observed. Reducing the potential depth further, Landau-Zener tunneling out of the lowest lattice band, leading to a breakdown of the oscillations, was also studied and used as a probe for the effective potential resulting from mean-field interactions as predicted by Choi and Niu [Phys. Rev. Lett. {\bf 82}, 2022 (1999)]. The effective potential was measured for various condensate densities and trap geometries, yielding good qualitative agreement with theoretical calculations.
Item Type: | Article |
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Additional Information: | Imported from arXiv |
Subjects: | Area02 - Scienze fisiche > FIS/03 - Fisica della materia |
Divisions: | Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI" |
Depositing User: | dott.ssa Sandra Faita |
Date Deposited: | 07 Apr 2015 17:40 |
Last Modified: | 07 Apr 2015 17:40 |
URI: | http://eprints.adm.unipi.it/id/eprint/1348 |
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