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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3343
DTSTART:20140331T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T193417Z
LAST-MODIFIED:20140331T162103Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Rydberg-atom trapping and spectroscopy in optical trapping fie
 lds\, Atomic Physics Seminar\, Georg Raithel\, University of Michigan
DESCRIPTION:Trapped\, cold Rydberg atoms are important in future appli
 cations in high-precision measurement\, field sensing and quantum info
 rmation processing. The following topics will be discussed. (1) We use
  high-resolution atom imaging to measure the Rydberg-Rydberg correlati
 on function in Rydberg-atom samples prepared within the spatially-vary
 ing light shifts of a laser trap.  We study the pair-correlation behav
 ior as well as direct two-photon excitation of correlated Rydberg-atom
  pairs in the trap. (2) We employ a standing-wave laser trap in combin
 ation with Rydberg-atom position control within the standing wave to s
 how that optical photoionization of a Rydberg atom does not occur with
 in the main lobes of the Rydberg electron’s wave-function\, but only
  within a relatively small volume around the nucleus. This evidence is
  consistent with the (sometimes unexpected) validity of the electric-d
 ipole approximation for optical Rydberg-atom photoionization. (3) Modu
 lated\, spatially inhomogeneous light fields\, such as amplitude-modul
 ated optical lattices\, can be used to drive multipole microwave trans
 itions between Rydberg levels in a minimally invasive manner. This ena
 bles high-precision measurements of atomic properties. I will show fir
 st results with this new type of spectroscopy. (4) High-precision spec
 troscopy will be most promising with circular\, Bohr-like Rydberg stat
 es. These have long lifetimes and low electric polarizabilities\, amon
 g other nice features. Towards this\, we have recently produced and tr
 apped such atoms with an adiabatic “crossed-fields” state-switchin
 g method. Looking ahead\, I will briefly discuss how these methods cou
 ld be combined to perform specific high-precision measurements. 
URL:https://www.physics.wisc.edu/events/?id=3343
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