Programme de la conférence

Le collagène est omniprésent dans les tissus biologiques, essentiellement sous forme de fibrilles dont la distribution 3D est spécifique de chaque tissu. L’imagerie de second harmonique, combinée à la polarimétrie linéaire et au dichroïsme circulaire, permet de sonder cette structure 3D et d’en mesurer le désordre à l’échelle submicrométrique.

Electrons and photons in an atomic-scale optical feed

Fundamental aspects of quadratic materials will be presented with strategies to enhance optical signals by engineering metal-oxides at the nanoscale. We aim at developing nonlinear and electro-optic photonic devices with bottom-up or top-down fabrication. We will show electro-optic responses in barium titanate and lithium niobate nanostructures.

One of the major goals in quantum technologies is the realization of quantum networks. For such networks based on optical fibers, telecom links between quantum nodes will be required. We here demonstrate how nonlinear optics with single photons realizes quantum frequency converters, transducting photonic quantum bits between the the wavelength of atomic or atom-like systems and the telecom bands.