Sökning: "Majorana"

Visar resultat 6 - 10 av 16 uppsatser innehållade ordet Majorana.

  1. 6. Circuit QED devices for probing Majorana zero modes

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

    Författare :Oscar Erlandsson; [2018]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Theoretical understanding indicates that Majorana zero modes in solid-state systems could be utilized for fault-tolerant quantum information processing. The ability to reliably detect these excitations, however, remains a challenge and many of their properties are still unknown. LÄS MER

  3. 7. Supercurrents in a Topological Josephson Junction with a Magnetic Quantum Dot

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Adam Szewczyk; [2018]
    Nyckelord :Majorana; Andreev; Keldysh; Josephson; density of states; quantum transport; topological superconductor; magnet;

    Sammanfattning : The purpose of this master thesis is to investigate theoretically the influence of a nanomagnet on the Josephson effect displayed by phase biased point contacts consisting of topological superconductors. The device is modeled using the nonequilibrium Keldysh Green’s function technique. First, the Gor’kov Green’s functions are calculated. LÄS MER

  4. 8. Braid group statistics and exchange matrices of non-abelian anyons : with representations in Clifford algebra

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Erik Sönnerlind; Gustav Brage; [2018]
    Nyckelord :;

    Sammanfattning : When leaving classical physics and entering the realm of quantum physics, there are many new concepts being introduced. One of the most fundamental ideas in quantum mechanics is that particles no longer have exact known positions, but instead expected values and prob- abilities. LÄS MER

  5. 9. Simulation of Majorana Bound States in Multi-Band Josephson Junction Nanowires

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

    Författare :Georg Wolgast; [2017]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Majorana bound states can be created at the ends of semiconducting nanowires using a combination of proximity-induced superconductivity, spin-orbit coupling and a magnetic eld. By adding a Josephson junction to this nanowire, four Majorana bound states can exist at the same time in the system. LÄS MER

  7. 10. Geometric Phases In Quantum Systems Of Pure And Mixed State

    Master-uppsats,

    Författare :Miran Haider; [2017]
    Nyckelord :Geometric phase; Berry; Uhlmann; Sjöqvist; Geometriska faser; Berry; Uhlmann; Sjöqvist;

    Sammanfattning : Note that equations and expressions has been omitted here and is instead presented in the work.  This thesis focuses on the geometric phase in pure and mixed quantum states. For the case of a pure quantum state, Berry's adiabatic approach (4.1. LÄS MER