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SEQUENCE:0
UID:UW-Physics-Event-4202
DTSTART:20160930T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T050907Z
LAST-MODIFIED:20160908T153618Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Engineering light-matter interactions with atom-like systems\,
  R. G. Herb Condensed Matter Seminar\, Jennifer Choy\, Draper Laborato
 ry
DESCRIPTION:Techniques that utilize photons to probe and manipulate di
 screte electronic energy levels in atoms have enabled numerous metrolo
 gy applications\, including precise and stable inertial sensors\, time
  and frequency standards\, magnetometers\, and test-beds of quantum in
 formation protocols. Despite the promise of this technology\, the elec
 tro-optics and vacuum requirements associated with atomic instruments 
 pose a considerable challenge to their implementation outside of the l
 aboratory. This field can greatly benefit from integration with a phot
 onics platform that provides robust and efficient control of photon-at
 om interactions. <br>
\nWide-bandgap semiconductors are candidate mate
 rial systems for such a photonics platform. Recent advancements in mat
 erial processing and nanofabrication have made it possible to develop 
 micro- and nano-photonic devices in these “nonstandard” materials.
  In some cases\, crystalline defects can lead to optically active colo
 r centers that can be isolated as single quantum systems (“artificia
 l atoms”)\, with optical and spin properties that are viable for qua
 ntum information and quantum sensing. <br>
\nIn this talk\, I will pro
 vide examples of engineering light-matter interactions with these arti
 ficial atoms\, focusing on the nitrogen-vacancy center in single-cryst
 al diamond. I will review several devices that enhance color-center em
 ission\, including nanowires and gratings that improve excitation and 
 collection efficiencies\, as well as resonators that modify spontaneou
 s emission rates. I will summarize the major applications that have be
 en enabled by diamond-based photonic devices. Finally\, I will conclud
 e with an overview of other potential photonic platforms (e.g. silicon
  carbide\, titanium dioxide\, silicon nitride\, III-V materials\, and 
 hybrid approaches)\, and a comparison between photonics with solid-sta
 te artificial atoms and real atomic systems. <br>
\n
URL:https://www.physics.wisc.edu/events/?id=4202
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