Statistical Majorana Bound State Spectroscopy

Physical Review Letters, vol. 130, pp. 106001

Abstract

Tunnel spectroscopy data for the detection of Majorana bound states (MBS) is often criticized for its proneness to misinterpretation of genuine MBS with low-lying Andreev bound states. Here, we suggest a protocol removing this ambiguity by extending single shot measurements to sequences performed at varying system parameters. We demonstrate how such sampling, which we argue requires only moderate effort for current experimental platforms, resolves the statistics of Andreev side lobes, thus providing compelling evidence for the presence or absence of a Majorana center peak.

Authors 4

1. Alexander Ziesen Aachen JARA-Institute for Quantum Information

   RWTH Aachen University

   Affiliation as printed

   JARA Institute for Quantum Information, RWTH Aachen University, 52056 Aachen, Germany

2. Alexander Altland

   University of Cologne

   Affiliation as printed

   Institut für Theoretische Physik, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany

3. Reinhold Egger

   Heinrich Heine University Düsseldorf

   Affiliation as printed

   Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany

4. Fabian Hassler Aachen JARA-Institute for Quantum Information

   RWTH Aachen University

   Affiliation as printed

   JARA Institute for Quantum Information, RWTH Aachen University, 52056 Aachen, Germany