Institut des Sciences Moléculaires d'Orsay




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Accueil > Séminaires > Année 2018 > Séminaire de Cyriaque Genet (20 nov 2018)

Séminaire de Cyriaque Genet (20 nov 2018)

Institut de Science et d’Ingénierie Supramoléculaires, Université de Strasbourg & CNRS

par Martrenchard-Barra Séverine - 7 novembre

“Chiralitons” : chiral strong coupling of valley excitons with spin-momentum locked surface plasmons

Surface plasmon excitations are offering the experimentalists new types of optical modes with inhomogeneous fields and complex beam topologies that lead to a great variety of effects. This is particularly clear in the context of optical spin-orbit interactions. Here, the concept of chirality is a key player, with fundamental implications in the context of chiral coupling. Coupling valley excitons in a transition metal dichalcogenide monolayer to spin-momentum locked surface plasmon modes exemplifies such implications. In the strong coupling regime, the onset of polaritonic states, so-called “chiralitons”, offers new possibilities for room temperature control and manipulation of valley coherences and polarizations.

Séminaire de Cyriaque Genet - 103.4 ko

20 nov 2018