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"Dipole-Dipole Interactions Among Ultracold Rydberg Atoms".

March 12, 2014 - 11:00am
Donald Fahey
Bryn Mawr College

For microsecond timescales, the dipole-dipole interaction is the dominant mechanism for energy exchange among atoms in an ultracold gas of highly excited neutral atoms, or Rydberg atoms.  By applying a dc electric field it is possible to tune these energy exchange processes into resonance via the Stark effect.  I will explore some of the interesting dynamics the can result from these field tuned resonant interactions.  Recent experiments will also be discussed, such as the direct imaging of the dipole-dipole interaction using a spatially sensitive ion detector, as well as possible interference in the resonant energy exchange process when atoms are prepared in coherent superposition states.

Host: Paul Lett

1201 Physics Building
College Park, MD 20742