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Observation of photon-assisted tunneling in optical lattices

Authors
  • Sias, C.
  • Lignier, H.
  • Singh, Y. P.
  • Zenesini, A.
  • Ciampini, D.
  • Morsch, O.
  • Arimondo, E.
Type
Preprint
Publication Date
Sep 20, 2007
Submission Date
Sep 20, 2007
Identifiers
DOI: 10.1103/PhysRevLett.100.040404
Source
arXiv
License
Unknown
External links

Abstract

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.

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