Sketch of paths of excitation through a microscope objective placed above the membrane (red cone) and luminescence collection by the fiber inside the cryostat. The arrow indicates the length of interaction between the fiber and the guide.
Sketch of paths of excitation through a microscope objective placed above the membrane (red cone) and luminescence collection by the fiber inside the cryostat. The arrow indicates the length of interaction between the fiber and the guide. © The authors
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Vassiliki Voliotis
Communication CNRS Physique
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Collecting single photons using adiabatic coupling between waveguide and optical fiber

Résultat scientifique

Researchers have shown that photons emitted by quantum dots (QDs) inserted into photonic crystal cavities and coupled to waveguides can be collected in the plane by a conical optical fiber, thanks to evanescent mode coupling between the guide and the fiber.

The present study was carried out in the following CNRS laboratories:

  • Institut des NanoSciences de Paris (INSP)
  • Institut de Recherche de Chimie Paris (IRCP)
  • Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA)
  • Centre de Nanosciences et de Nanotechnologies (C2N)
     

References :

Collecting single photons from a cavity-coupled quantum dot using an adiabatic tapered fiber, Bach A., Chapuis A., Morin, C., Hostein, R., Germanis S., Eble, B., Bernard, M., Margaillan, F., Atkinson, P, Voliotis, V., Moratis, K., Braive, R., Physical Review Applied 23, 044008 - Published 3 April, 2025.
DOI : 10.1103/PhysRevApplied.23.044008

Contact

Vassiliki Voliotis
Enseignant-chercheur de Sorbonne Université, à l'Institut des NanoSciences de Paris (INSP)
Communication CNRS Physique