Atomic Bloch-Zener Oscillations and Stueckelberg Interferometry in Optical Lattices
- Institut fuer Angewandte Physik der Universitaet Bonn, Wegelerstrasse 8, 53115 Bonn (Germany)
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 Stueckelberg interferometer allow us to interferometrically map out the band structure of the optical lattice over the full Brillouin zone.
- OSTI ID:
- 21541735
- Journal Information:
- Physical Review Letters, Vol. 105, Issue 21; Other Information: DOI: 10.1103/PhysRevLett.105.215301; (c) 2010 American Institute of Physics; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Spatial Landau-Zener-Stueckelberg interference in spinor Bose-Einstein condensates
Bloch-Zener oscillations in a tunable optical honeycomb lattice