From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires

Prada, Elsa and San-Jose, Pablo and de Moor, Michiel W. A. and Geresdi, Attila and Lee, Eduardo J. H. and Klinovaja, Jelena and Loss, Daniel and Nygård, Jesper and Aguado, Ramón and Kouwenhoven, Leo P.. (2020) From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires. Nature Reviews Physics, 2 (10). pp. 575-594.

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Inhomogeneous superconductors can host electronic excitations, known as Andreev bound states (ABSs), below the superconducting energy gap. With the advent of topological superconductivity, a new kind of zero-energy ABS with exotic qualities, known as a Majorana bound state (MBS), has been discovered. A special property of MBS wavefunctions is their non-locality, which, together with non-Abelian braiding, is the key to their promise in topological quantum computation. We focus on hybrid superconductor-semiconductor nanowires as a flexible and promising experimental platform to realize one-dimensional topological superconductivity and MBSs. We review the main properties of ABSs and MBSs, state-of-the-art techniques for their detection and theoretical progress beyond minimal models, including different types of robust zero modes that may emerge without a band-topological transition. Topological Majorana bound states have potential for encoding, manipulating and protecting quantum information in condensed-matter systems. This Review discusses emergence and characterization of Majorana bound states in realistic devices based on hybrid semiconducting nanowires and their connection to more conventional Andreev bound states.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretical Nano/Quantum Physics (Klinovaja)
UniBasel Contributors:Klinovaja, Jelena
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:07 Apr 2022 09:21
Deposited On:20 Apr 2021 15:38

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