2000 character limit reached
Bose-Einstein condensates in 1D optical lattices: nonlinearity and Wannier-Stark spectra (0708.0479v1)
Published 3 Aug 2007 in cond-mat.other
Abstract: We present our experimental investigations on the subject of nonlinearity-modified Bloch-oscillations and of nonlinear Landau-Zener tunneling between two energy bands in a rubidium Bose Einstein condensate in an accelerated periodic potential. Nonlinearity introduces an asymmetry in Landau-Zener tunneling. We also present measurements of resonantly enhanced tunneling between the Wannier-Stark energy levels for Bose-Einstein condensates loaded into an optical lattice.
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