Bose-Einstein condensates in 1D optical lattices: nonlinearity and Wannier-Stark spectra
E. Arimondo, D. Ciampini, O. Morsch
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.
arXiv:0708.0479•Aug 3, 2007•0 citations