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Observation of photon-assisted tunneling in optical lattices

Sias, C. and Lignier, H. and Singh, Y. P. and Zenesini, A. and Ciampini, D. and Morsch, O. and Arimondo, E. (2007) Observation of photon-assisted tunneling in optical lattices. Physical review letters . ISSN 0031-9007

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We have observed tunneling suppression and photon-assisted tunneling of Bose-Einstein condensates in an optical lattice subjected to a constant force plus a sinusoidal shaking. For a sufficiently large constant force, the ground energy levels of the lattice are shifted out of resonance and tunneling is suppressed; when the shaking is switched on, the levels are coupled by low-frequency photons and tunneling resumes. Our results agree well with theoretical predictions and demonstrate the usefulness of optical lattices for studying solid-state phenomena.

Item Type: Article
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: 03 Apr 2015 09:25
Last Modified: 03 Apr 2015 09:25
URI: http://eprints.adm.unipi.it/id/eprint/1392

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