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|Author(s):||A Browaeys; H H ffnert; C R. McKenzie; S L. Rolston; Kristian Helmerson; William D. Phillips;|
|Title:||Transport of Atoms in a Quantum Conveyor Belt|
|Abstract:||We have performed experiments using a 3D-Bose-Einstein condensate of sodium atoms in a 1D optical lattice to explore some unusual properties of band-structure. In particular, we investigate the loading of a condensate into a moving lattice and find non-intuitive behavior. We also revisit the behavior of atoms, prepared in a single quasimomentum state, in an accelerating lattice. We generalize this study to a cloud whose atoms have a large quasimomentum spread, and show that the cloud behaves differently from atoms in a single Bloch state. Finally, we compare our findings with recent experiments performed with fermions in an optical lattice.|
|Citation:||Physical Review A (Atomic, Molecular and Optical Physics)|