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AMO PHYSICS SEMINAR


"Shaped laser beams and atoms in optical lattices"


Dan Heinzen
Department of Physics
The University of Texas at Austin


ABSTRACT 

Atoms in optical lattices have been shown to realize the Bose-Hubbard Hamiltonian, and can in principle emulate a wide variety of quantum many body systems. I will briefly discuss results from our laboratory on the Bose-Hubbard gas, and give a brief update on the status of the field. I will also discuss a new method for shaping laser beams with a precision better than 0.3% rms, considerably better than any previous method. To do this, we use a Digital Micromirror Device (DMD) spatial light modulator to provide position-dependent attenuation of a laser beam. A number of obstacles must still be overcome before atoms in optical lattices become a generally useful emulation tool, and our new beam shaping methods could play a role in meeting these challenges.


Friday, October 26, 2012
IQSE 578, 2:00 p.m.
Mitchell Physics Building


Department of Physics and Astronomy
Texas A&M University

(Coffee and Cookies to be served at 1:45 p.m.)

Host: Alexandre Kolomenski