Coherent transport of cold atoms in angle-tuned optical lattices

Details Coherent transport of cold atoms in angle-tuned optical lattices Coherent transport of cold atoms in angle-tuned optical lattices

2006-02-02

arxiv.org/abs/cond-mat/0602048v3

Physics

Condensed Matter

Other Condensed Matter

8 pages, 5 figures, one section added, in press in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.74.013403

Optical lattices with a large spacing between the minima of the optical potential can be created using the angle-tuned geometry where the 1-D periodic potential is generated by two propagating laser beams intersecting at an angle different from $\pi$. The present work analyzes the coherent transport for the case of this geometry. We show that the potential depth can be kept constant during the transport by choosing a magic value for the laser wavelength. This value agrees with that of the counterpropagating laser case, and the magic wavelength does not depend of the optical lattice geometry. Moreover, we find that this scheme can be used to implement controlled collision experiments under special geometric conditions. Finally we study the transport of hyperfine-Zeeman states of rubidium 87.

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