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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-8276
DTSTART:20230503T150000Z
DTEND:20230503T163000Z
DTSTAMP:20260414T033338Z
LAST-MODIFIED:20230425T180812Z
LOCATION:Engineer Hall-4610
SUMMARY:Photon-photon interaction in a nonlinear photonic circuit\, Wi
 sconsin Quantum Institute\, Prof. Kejie Fang\, University of Illinois 
 at Urbana-Champaign
DESCRIPTION:Interaction between individual photons forms the foundatio
 n of gate-based optical quantum computing among other quantum-enabled 
 technologies. Quantum emitter-mediated photon interactions are fundame
 ntally constrained by stringent operation conditions and the available
  photon wavelength and bandwidth\, posing difficulty in upscaling and 
 practical applications. It is a long-standing goal to realize interact
 ions between individual photons using the more engineerable bulk optic
 al nonlinearity\, such as chi2 and chi3. I will describe the first obs
 ervation of photon-photon interaction mediated by a virtual photon in 
 an integrated photonic circuit with a substantial chi2 nonlinearity an
 d the resulting quantum correlations of transported photons including 
 photon repulsion and attraction. These results represent a significant
  leap in nonlinear optics and quantum photonics\, transcending the lon
 gtime paradigm of parametric nonlinear processes and paving the way to
 wards strongly interacting photons in bulk nonlinear systems. Moreover
 \, I will talk about using such integrated photonic platform with extr
 eme nonlinearity for nonlinearity-enabled quantum network protocols.
URL:https://www.physics.wisc.edu/events/?id=8276
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