Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-08-05
Phys. Rev. A 78, 051602(R) (2008)
Physics
Condensed Matter
Other Condensed Matter
5 pages, 2 figures, 6 subfigures
Scientific paper
10.1103/PhysRevA.78.051602
We show how it is possible to more than double the on-site interaction energy of neutral atoms in optical potentials by the technique of radio-frequency (rf) dressing, while maintaining interwell dynamics. We calculate Bose-Hubbard parameters for rf dressed optical lattices and arrays of rf dressed dipole traps. We show that decreasing the distance between wells, by the interpolation of wells confining different m_F states, increases the interaction energy more than decreasing the height of the classically forbidden region between existing wells. The schemes we propose have negligible Landau-Zener losses caused by atomic motion; this was a dominant effect in the first experimental demonstration of the modification of an optical potential by radio-frequency dressing.
Foot Christopher
Shotter Martin
Trypogeorgos Dimitrios
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