Accueil > Agenda Scientifique

2 avril 2020: 1 événement

séminaire

  • (Online via ZOOM) Electrical detection of non-Abelian statistics in topological superconductors

    Jeudi 2 avril 11:00-13:00 - Aurélien Grabsch - Lorentz Institute, Leiden University

    (Online via ZOOM) Electrical detection of non-Abelian statistics in topological superconductors

    Résumé : Topological superconductors can support quasiparticle excitations which posses unusual exchange statistics, called non-Abelian anyons. They correspond to midgap states localized in the core of a vortex or bound to the end of a nanowire. However, their unusual statistics cannot be easily demonstrated as they are immobile, and one should rely on indirect methods. Here, we propose a real-space alternative that relies on the chiral motion along the edges of a topological superconductor [1]. We present an approach that allows to inject on demand so-called edge vortices, which are pi-phase domain walls which propagate along the chiral edge channels, and possess non-Abelian statistics. We show that the signatures of this unusual exchange statistics can be detected in an electrical measurement [2].
    [1] Electrical detection of the Majorana fusion rule for chiral edge vortices in a topological superconductor,
    C.W.J Beenakker, A. Grabsch, Y. Herasymenko SciPost Phys. 6, 022 (2019)
    [2] Time-resolved electrical detection of chiral edge vortex braiding,
    I. Adagideli, F. Hassler, A. Grabsch, M. Pacholski, C.W.J. Beenakker SciPost Phys. 8, 013 (2020)

    Lieu : Online via ZOOM

    En savoir plus : (Online via ZOOM) Electrical detection of non-Abelian statistics in topological superconductors