Sökning: "geometric phase"

Visar resultat 6 - 10 av 26 uppsatser innehållade orden geometric phase.

  1. 6. Genuine geometric quantum gates induced by non-cyclic geodesic evolution of computational basis

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Materialteori

    Författare :Nils Eivarsson; [2022]
    Nyckelord :quantum computation; geometric phase;

    Sammanfattning : To reach the error threshold required to successfully perform error-correcting algorithms in quantum computers, geometric quantum gates have been considered because of their natural resilience against noise. Non-cyclic geometric gates have been proposed to reduce the run time of conventional geometric gates, to further guard against decoherence. LÄS MER

  3. 7. Studies on Reverse Engineering of Constant Frequence Geometric Quantum Gates

    Master-uppsats, Uppsala universitet/Materialteori

    Författare :Wu Zijin; [2022]
    Nyckelord :;

    Sammanfattning : Geometric Quantum Computation (GQC) is one of the effective methods to realizequantum computation. By using geometric phases, it shows robustness to certainerrors. This thesis aims to develop a new systematic technique for implementing GQC,especially in non-adiabatic systems. LÄS MER

  4. 8. Topological Band Theory, An Overview

    Master-uppsats, Göteborgs universitet / Institutionen för fysik

    Författare :Jens Roderus; [2021-06-14]
    Nyckelord :;

    Sammanfattning : Topological insulators, superconductors and semi-metals are states of ma er with unique features such as quantized macroscopic observables and robust, gapless edge states. ese states can not be explained by standard quantum mechanics, but require also the framework of topology to be properly characterized. LÄS MER

  5. 9. Adiabatic Shortcut to Geometric Quantum Computation in Noiseless Subsystems

    Kandidat-uppsats, Uppsala universitet/Materialteori

    Författare :Anton Gregefalk; [2021]
    Nyckelord :Quantum computer; Spin echo; Adiabatic shortcut; Berry s phase; Noiseless subsystems; Kvantdator; spinn eko; adiabatisk genväg; Berrys fas; Brusfria delsystem;

    Sammanfattning : Quantum computers can theoretically perform certain tasks which classical computers at realistic times could not. Operating a quantum computer requires precise control over the system, for instance achieved by adiabatic evolution, and isolation from the environment to retain coherence. LÄS MER

  7. 10. Adiabatisk genväg till quditberäkning

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Kellen Smith; [2021]
    Nyckelord :adiabatic shortcut; qudit; quantum computation; logic gate; holonomy; geometric phase; robust gates;

    Sammanfattning : One of the major challenges hindering advancement of quantum computing is the sensitive nature of the physical systems used to build a quantum computer. One suggestion for improving reliability is a particular type of logic gates, based on Berry's geometric phase, showing improved robustness to external disturbance of the quantum system over the course of a calculation. LÄS MER