Caractérisation d'excitation topologique par des photons

par Vincent Vinel

Projet de thèse en Physique

Sous la direction de Takis Kontos.

Thèses en préparation à Paris Sciences et Lettres , dans le cadre de École doctorale Physique en Île-de-France (Paris) , en partenariat avec Laboratoire Pierre Aigrain (Paris) (laboratoire) et de Ecole normale supérieure (établissement de préparation de la thèse) depuis le 01-09-2018 .

  • Titre traduit

    Probing topological matter with cavity photons


  • Résumé

    Cavity quantum electrodynamics, which deals with interaction between light and matter at the most elementary level has taught us how to probe, manipulate and couple individual quantum systems with an exquisite accuracy. Recently, these methods have been developed in the context of mesoscopic physics. In such mesoscopic quantum electrodynamics (mesoQED) architectures, the tools of cavity QED have been shown to allow us to probe with a very high sensitivity intricate charge or spin dynamics in nanoscale devices. In this project, we will build on our recently developed mesoQED architecture based on single wall carbon nanotubes, to study topological excitations and investigate their exotic properties. The topological excitation will be generated in hybrid superconductor/nanotube/magnetic texture structures [1] or in nanotubes with a gate array. In particular, we will use the cavity photons as ultra-sensitive probes of these exotic excitations as for example recently proposed theoretically [2]. Such measurements will open a path to manipulation of these topological excitations, which could be used for topological quantum computation. [1]M.M. Desjardins, L.C. Contamin et al. submitted [2]M.C. Dartiailh, T. Kontos, B. Douçot and A. Cottet, PRL'17.