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<div><font color="#000080"><b>Old Dominion University</b></font></div>
<div><font color="#000080"><b>Department of Physics</b></font></div>
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<div><font color="#31849B"><b>Spring Colloquium Series</b></font></div>
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<div><font color="#17365D" size="5"><b>Tuesday January 31, 2012</b></font></div>
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<div><font color="#31849B" size="5"><b>"Quantum Collapse and Revival of Ultracold Atoms in Optical Lattices"</b></font></div>
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<font color="#1F497D" size="5" face="Times New Roman, serif"><b>Dr. Phil Johnson</b></font></font></div>
<div><font color="#1F497D" size="5"><b>American University</b></font></div>
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<div><font size="3">An optical lattice is a force field of light created by counter-propagating laser beams which can suspend arrays of ultracold atoms much like eggs are held in an egg carton. It is possible to load lattices with equilibrium states where single
atoms occupy distinct wells, or where atoms behave collectively like a superfluid and, in some sense, occupy many lattice wells simultaneously. I will describe our investigations of the dynamics of even stranger nonequilibrium states of atoms which oscillate
in time between being a superfluid and an incoherent classical gas. Our studies reveal universal properties of low-energy interactions between trapped bosons, and also probe the cross-over between quantum and classical physics. Finally, I will also describe
our efforts toward designing new types of quantum sensors based on the nonlinear dynamics of ultracold atoms trapped in lattices.</font></div>
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<div><font size="4">Presentation: Physical Sciences Building II 1100 @ 3:00 pm</font></div>
<div><font size="4">Refreshments: 1st Floor Atrium @ 2:30 pm</font></div>
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<div><font size="4">More details at <a href="http://www.physics.odu.edu">
http://www.physics.odu.edu</a></font></div>
<div><font size="4">All are Welcome<font size="3">!</font></font></div>
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