FisMat2017 - Submission - View

Abstract's title: Out of equilibrium dynamics of single electron injection in interacting topological channels
Submitting author: Matteo Acciai
Affiliation: Dipartimento di Fisica, Università di Genova
Affiliation Address: Via Dodecaneso 33, 16146 Genova, Italy
Country: Italy
Oral presentation/Poster (Author's request): Oral presentation
Other authors and affiliations: Alessio Calzona (Dipartimento di Fisica, Università di Genova), Giacomo Dolcetto (Physics and Materials Science Research Unit, University of Luxembourg), Thomas L. Schmidt (Physics and Materials Science Research Unit, University of Luxembourg), Maura Sassetti (Dipartimento di Fisica, Università di Genova)

The possibility of injecting single electrons into one-dimensional ballistic conductors is at the basis of the new field of electron quantum optics.  In this presentation I will focus on the single electron injection process into interacting topological quantum Hall or quantum spin Hall edge states. The unavoidable presence of electron-electron interactions strongly affects the time evolution of charge and energy wave packets, leading to their fractionalization. We elucidate the dynamics of fractionalization by calculating the nonequilibrium electron distribution function in the momentum and energy domains after the injection. The results show how fractionalization occurs via the creation of particle-hole pairs by the injected electron.