Atomic, Molecular, and Optical Physics Seminar

Spin Waves in an Ultra-Cold Atomic Vapor

Professor Dwight Whitaker

Williams College

We have developed a novel system to create ultra-cold samples of rubidium-87. Our system mechanically transfers atoms from a vapor cell magneto-optical trap to a region of ultra-high vacuum, and a uses a novel Ioffe-Pritchard trap made from both permanent and electromagnets for evaporative cooling. Trapped atoms can be put into a coherent superposition of hyperfine states and Ramsey spectroscopy is used to precisely measure their energy difference. Shifts in the energy between states due to magnetic fields and collisions are observed. We have also observed spin waves, which arise from collisions between atoms within the sample.

Monday, November 1, 2004
4:00 PM
Gant Science Complex
Physics Department
Room P121


© 2004 Department of Physics, University of Connecticut
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