Sökning: "Topological superconductivity"

Hittade 5 uppsatser innehållade orden Topological superconductivity.

  1. 1. Quasicrystal nanowires in SNS-junctions

    Master-uppsats, Uppsala universitet/Materialteori

    Författare :Anna Sandberg; [2022]
    Nyckelord :quasicrystal; Fibonacci quasicrystal; superconductivity; SNS-junction; Josephson junction; proximity effect; Josephson current; Bogoliubov-de Gennes method;

    Sammanfattning : Quasicrystals are systems that are ordered but not periodic. They do however still have long-range order and well-defined diffraction peaks. This leads to interesting properties, like critical states which are neither extended nor localized, and to topological invariants and edge states. LÄS MER

  3. 2. Fabrication Development of InAs-Pb Nanodevices

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Bo Rasmus Edholm; [2022]
    Nyckelord :Nanofabrication; Qubit; InAs; SAG; Nanowire; Lithography; EBL;

    Sammanfattning : Research groups around the world are looking to develop a qubit protected from decoherence for achieving quantum advantage in computations. This would have huge impact on the modern world. The applications are many from drug development to cryptography and many more  elds. LÄS MER

  4. 3. Characterization of InAs-Al semiconductor-superconductor hybrid devices

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Markus Aspegren; [2020]
    Nyckelord :quantum dot; superconductivity; quantum transport; josephson junction; spectroscopy; yu-shiba-rusinov; hybrid devices; sub-gap states; quantum computer; majorana bound state; bogoliubov quasiparticle; Physics and Astronomy;

    Sammanfattning : In this thesis we study charge and spin transport through InAs-Al nanowire superconductor-semiconductor hybrid devices. We focus on assessing the quality of the InAs-Al contact interface when using a weak HCl acid to wet-etch the nanowire surface prior to metal evaporation. LÄS MER

  5. 4. Majorana bound states in Rashba nanowire junctions

    L3-uppsats, Uppsala universitet/Materialteori

    Författare :Lucas Baldo Mesa Casa; [2020]
    Nyckelord :Topological superconductivity; Rashba nanowires; Majorana Bound States;

    Sammanfattning : Nanowires with Rashba spin-orbit coupling represent a promising platform for the realization of one-dimensional topological superconductivity and Majorana bound states. In this work we investigate Majorana bound states in hybrid normal-superconductor and short superconductor-normal-superconductor junctions based on nanowires with Rashba spin-orbit coupling. LÄS MER

  7. 5. Majorana bound states in inhomogeneous nanowires

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Johan Ekström; [2017]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Majorana bound states are in condensed matter physics quasiparticle excitations which can be found in so-called topological superconductors. They have lately received much attention since they have been predicted to be partly immune to decoherence and therefore suitable for quantum computation. LÄS MER