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Colloquia

ics Colloquium
Friday, October 13, 2006
4:00 PM
Physics Building, Room 204
Note special time.
Bill Phillips [Host: Thomas Gallagher]
NIST
""A Bose Condensate in an Optical Lattice: cold atoms meet solid state""
ABSTRACT:
An atomic-gas Bose-Einstein Condensate, placed in the periodic light-shift potential of an optical standing wave, exhibits many features that are similar to the familiar problem of electrons moving in the periodic potential of a solid-state crystal lattice. Among the differences are that the BEC represents a wavefunction whose coherence extends over the entire lattice, with what is essentially a single quasi momentum and that the lattice potential can be turned on and off or accelerated through space. Experiments that are not easily done with solids are often straightforward with optical lattices, sometimes with surprising results.

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