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VERSION:2.0
PRODID:Icfo
X-PUBLISHED-TTL:P1W
BEGIN:VEVENT
UID:69d6f0c0d2aad
DTSTART:20260417T100000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20260417T110000Z
LOCATION:Elements Room
SUMMARY:ICFO | HANNA LE JEANNIC
CLASS:PUBLIC
DESCRIPTION:Solid-state quantum emitters are promising building blocks for 
 scalable quantum photonics\, but their practical use is often limited by i
 nefficient photon extraction and insufficient light&ndash\;matter interact
 ion strength. Reaching the regime where a single emitter significantly mod
 ifies a propagating optical field requires maximizing coupling to a well-d
 efined mode while engineering the local density of optical states.  In thi
 s talk\, I will present our approach based on tapered optical nanofibers\,
  subwavelength singl-mode waveguides that provide direct compatibility wit
 h fiber networks. Emitters coupled to their evanescent field can already r
 each &beta\;-factors on the order of 20-30%\, while maintaining a simple a
 nd low-loss geometry.  To further enhance light&ndash\;matter interaction\
 , we explore two complementary nanophotonic strategies. First\, we pattern
  dielectric nanostructures directly on the nanofiber to locally tailor the
  electromagnetic environment and increase emission into the guided mode. S
 econd\, we deposit diamond nanophotonic waveguides hosting quantum emitter
 s onto the nanofiber\, combining the favorable optical properties of diamo
 nd with efficient fiber coupling. These two approaches provide distinct ro
 utes to increase LDOS and mode overlap\, and to push the system toward hig
 her &beta\;-factors.  Together\, these developments aim at entering a regi
 me where a single emitter acts as a strongly nonlinear optical element. Wh
 en this waveguide QED regime is reached\, photon-photon interactions can b
 e mediated at the single-emitter level\, opening a path toward determinist
 ic nonlinear optics and the generation of highly non classical states of l
 ight in a fiber-integrated platform.
DTSTAMP:20260409T002016Z
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