title: Probing Majorana modes in the tunneling spectra of a resonant level.
abstract: Unambiguous identification of Majorana physics presents an outstanding problem whose solution could render topological quantum computing feasible. We develop a numerical approach to treat finite-size superconducting chains supporting Majorana modes, which is based on iterative application of a two-site Bogoliubov transformation. We demonstrate the applicability of the method by studying a resonant level attached to the superconductor subject to external perturbations. In the topological phase, we show that the spectrum of a single resonant level allows us to distinguish peaks coming from Majorana physics from the Kondo resonance.
authors.affiliation: Institute for Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Korytár
authors.forename: P
authors.initials: P
authors.lastname: Schmitteckert