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SUMMARY:Coherent control of dense Rydberg gases - Tilman Pfau (University 
 of Stuttgart)
DTSTART:20121105T153000Z
DTEND:20121105T170000Z
UID:TALK40909@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:We report on coherent interaction effects involving Rydberg at
 oms in a dense gas. Their long-range strong interaction is responsible for
  novel many-body physics. Universal scaling behaviour due to an underlying
  quantum phase transition is observed [1]. Also the coherence properties o
 f Förster resonances giving rise to resonant dipolar interactions were in
 vestigated using a pair state interferometer [2]. We also report on our re
 cent observation of coherent control of Rydberg atoms and van der Waals in
 teraction between Rydberg atoms in thermal vapor cells [3].\n\n\nReference
 s\n[1] R. Löw\, H. Weimer\, U. Raitzsch\, R. Heidemann\, V. Bendkowsky\, 
 B. Butscher\, H. P. Büchler\, and T. Pfau\, Phys. Rev. A 80\, 033422 (200
 9)\, H. Weimer\, R. Löw\, T. Pfau\, and H. P. Büchler\, Phys. Rev. Lett.
  101 250601 (2008).\n[2] J. Nipper\, J. B. Balewski\, A. T. Krupp\, B. But
 scher\, R. Löw\, T. Pfau\, Phys. Rev. Lett. 108\, 113001 (2012)\, J. Nipp
 er\, J.B. Balewski\, A.T. Krupp\, S. Hofferberth\, R. Löw\, T. Pfau\, acc
 epted in Phys. Rev. X.\n[3] B. Huber\, T. Baluktsian\, M. Schlagmüller\, 
 A. Kölle\, H. Kübler\, R. Löw\, T. Pfau\,\nPhys. Rev. Lett. 107\, 24300
 1 (2011). T. Baluktsian\, B. Huber\, \, R. Löw\, T. Pfau\, submitted for 
 publication.\n\n
LOCATION:Rutherford building\, Seminar Room B
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