We report on experiments investigating quantum transport and band interferometry of an atomic Bose-Einstein condensate in an optical lattice with a two-band miniband structure, realized with a Fourier-synthesized optical lattice potential. Bloch-Zener oscillations, the coherent superposition of Bloch oscillations and Landau-Zener tunneling between the two bands, are observed. When the relative phase between paths in different bands is varied, an interference signal is observed, demonstrating the coherence of the dynamics in the miniband system. Measured fringe patterns of this Stückelberg interferometer allow us to interferometrically map out the band structure of the optical lattice over the full Brillouin zone.
Atomic Bloch-Zener oscillations and Stückelberg interferometry in optical lattices.
S. Kling,T. Salger,C. Grossert,M. Weitz
Published 2010 in Physical Review Letters
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- Publication year
2010
- Venue
Physical Review Letters
- Publication date
2010-06-11
- Fields of study
Medicine, Physics
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Semantic Scholar, PubMed
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