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Visar resultat 1 - 5 av 6 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Majorana bound states in chains of interacting quantum dots

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen; Lunds universitet/NanoLund: Centre for Nanoscience

    Författare :William Samuelson; [2023]
    Nyckelord :quantum dots; superconducting proximity effect; Majorana bound states; Physics and Astronomy;

    Sammanfattning : This thesis concerns the creation of Majorana bound states (MBSs) -- a type of condensed matter excitations theorized to have exotic and technologically valuable properties. In particular, they could be used to store and manipulate quantum information in a protected way, forming the building blocks of a topological quantum computer. 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. Discussions on Dai-Freed Anomalies

    Master-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Huaiyu Li; [2019]
    Nyckelord :Anomaly; Quantum Fields Theory; Dai-Freed Theorem; Topology;

    Sammanfattning : In both field theories of high energy physics and field theories of condensed matter theories anomalies have been imposing constraints and bringing up new theories. While the perturbational and local anomalies from triangle diagrams are well-developed, we follow and review two works leading to non-perturbational global anomalies both related with Atiyah-Patogi-Sieger (APS) index theorem. LÄS MER