BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:5
UID:UW-Physics-Event-5190
DTSTART:20191008T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260415T061130Z
LAST-MODIFIED:20191007T202322Z
LOCATION:4274 Chamberlin Hall
SUMMARY:Spectroscopy with Josephson Junctions\, R. G. Herb Condensed M
 atter Seminar\, Dr. Çaglar Girit\, College de France
DESCRIPTION:Spectroscopy\, by providing a direct measurement of the en
 ergy spectrum\, is a powerful tool to probe matter. Conventional spect
 roscopy techniques suffer several drawbacks when applied to mesoscopic
  systems\, or artificial quantum coherent atoms. I present an on-chip\
 , Josephson-junction based spectrometer which surpasses state-of-the-a
 rt instruments\, works between 2-200 GHz\, and is ideally suited for p
 robing elementary excitations in mesoscopic systems. I describe the op
 erating principle and design of the spectrometer\, show spectra of sev
 eral superconducting quantum circuits\, and outline experiments to inv
 estigate single quasiparticles in superconductors.
URL:https://www.physics.wisc.edu/events/?id=5190
END:VEVENT
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