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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-4387
DTSTART:20170127T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T043404Z
LAST-MODIFIED:20170113T213457Z
LOCATION:5310 Chamberlin
SUMMARY:Ultralow-Power Nonlinear Optics using Metastable Xenon in a Ca
 vity\, Atomic Physics Seminar\, Garrett Hickman\, UMBC
DESCRIPTION:Single-photon cross phase shifts and other single-photon n
 onlinearities have numerous applications in all-optical quantum inform
 ation processing. Several groups have experimentally achieved single-p
 hoton phase shifts on the order of pi. However\, nonlinearities weaker
  than this have important applications as well. We introduce the idea 
 of using metastable xenon gas in a high-finesse cavity to produce weak
  single-photon nonlinearities. This relatively simple and robust syste
 m avoids problems associated with the accumulation of alkali atoms on 
 mirror surfaces\, and is capable of approaching the strong coupling re
 gime of cavity quantum electrodynamics. We demonstrate the feasibility
  of our approach with two proof-of-principle demonstrations\, by measu
 ring absorption saturation and cross-phase modulation using a cavity o
 f moderately high finesse F=3\,000. We find that the nonlinear effects
  occur at ultralow input power levels\, proving that the presence of t
 he cavity strongly enhances the inherent optical nonlinearities of met
 astable xenon. We close our discussion by reviewing our recent progres
 s in building an improved cavity system\, which is expected to produce
  enhanced single photon cross phase shifts.
URL:https://www.physics.wisc.edu/events/?id=4387
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