Séminaire général de François DUBIN

Séminaire général de François DUBIN, CRHEA – CNRS et Université Côte d’Azur, le jeudi 30 janvier 2025 à 11h00 dans l'Auditorium de l'Institut d'Optique Graduate School à Palaiseau, sur le thème : " Coherent quantum solids of dipolar excitons in sub-wavelength lattices. "

Résumé : " The Bose-Hubbard (BH) Hamiltonian constitutes one pillar of condensed-matter theory. It specifically describes the collective quantum phases accessible to strongly correlated bosons confined in lattice potentials. Here, we present a semiconductor technology to emulate BH models with spatially extended correlations. By relying on semiconductor excitons, i.e. Coulomb-bound electron-hole pairs, extended Bose-Hubbard Hamiltonians are implemented in sub-wavelength period lattices where interactions are ruled by longitudinal and transverse components of the electromagnetic radiation. These respectively yield dipolar repulsions extending to nearest neighbors, and power-law hoping in the lattice. Harnessing these two channels coherent quantum insulators are prepared dissipatively with high purity across around 10x10 sites, namely at unity and half lattice fillings coherent Mott and checkerboard solids. "