From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires
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From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires. / Prada, Elsa; San-Jose, Pablo; de Moor, Michiel W. A.; Geresdi, Attila; Lee, Eduardo J. H.; Klinovaja, Jelena; Loss, Daniel; Nygard, Jesper; Aguado, Ramon; Kouwenhoven, Leo P.
In: Nature Reviews Physics, Vol. 2, No. 10, 10.2020, p. 575-594.Research output: Contribution to journal › Review › Research › peer-review
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TY - JOUR
T1 - From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires
AU - Prada, Elsa
AU - San-Jose, Pablo
AU - de Moor, Michiel W. A.
AU - Geresdi, Attila
AU - Lee, Eduardo J. H.
AU - Klinovaja, Jelena
AU - Loss, Daniel
AU - Nygard, Jesper
AU - Aguado, Ramon
AU - Kouwenhoven, Leo P.
PY - 2020/10
Y1 - 2020/10
N2 - 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.
AB - 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.
KW - JOSEPHSON CURRENT
KW - ZERO MODES
KW - QUANTUM
KW - FERMIONS
KW - SUPERCURRENT
KW - CONDUCTANCE
KW - SIGNATURE
KW - TRANSPORT
KW - REVERSAL
KW - EPITAXY
U2 - 10.1038/s42254-020-0228-y
DO - 10.1038/s42254-020-0228-y
M3 - Review
VL - 2
SP - 575
EP - 594
JO - Nature Reviews Physics
JF - Nature Reviews Physics
SN - 2522-5820
IS - 10
ER -
ID: 252154126