Journal
PHYSICAL REVIEW A
Volume 79, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.021602
Keywords
Bose-Einstein condensation; localised states; optical lattices; optical vortices; radiation pressure
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Funding
- National Science Foundation [PHY-0758104]
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We present a theoretical study of vortices within a harmonically trapped Bose-Einstein condensate in a rotating optical lattice. We find that proximity to the Mott insulating state dramatically affects the vortex structures. To illustrate, we give examples in which the vortices (i) all sit at a fixed distance from the center of the trap, forming a ring, or (ii) coalesce at the center of the trap, forming a giant vortex. We also model time-of-flight expansion.
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