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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3043
DTSTART:20130924T190000Z
DURATION:PT1H0M0S
DTSTAMP:20260314T120405Z
LAST-MODIFIED:20130816T140747Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Coherent Photoassociation in a Strontium BEC\, Atomic Physics 
 Seminar\, Tom Killian\, Rice University
DESCRIPTION:The divalent electronic structure of alkaline-earth metal 
 atoms such as strontium gives rise to metastable\, excited triplet lev
 els and narrow intercombination transitions. These have been exploited
  for optical clocks\, powerful laser cooling techniques that are criti
 cal for achieving quantum degeneracy in strontium\, and proposals for 
 quantum information architectures and studies of novel magnetism. Meta
 stable excited electronic states also give rise to narrow photoassocia
 tion (PA) transitions that differ in many ways from traditional PA wit
 h broad\, electric-dipole-allowed transitions. In this talk\, we will 
 describe narrow-line PA near the ^1S_0-^3P_1 intercombination transiti
 on in an ^88Sr Bose-Einstein condensate.  This results in coherent PA 
 and Rabi oscillations between atomic and molecular condensates.  Trans
 ient shifts and broadenings of the excitation spectrum are clearly see
 n at short times\, and they create an asymmetric excitation profile th
 at only displays Rabi oscillations for blue detuning from resonance. C
 oherent PA is analogous to molecule formation with a magnetic Feshbach
  resonance.
URL:https://www.physics.wisc.edu/events/?id=3043
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