Essays about: "topological phases"

Showing result 1 - 5 of 11 essays containing the words topological phases.

  1. 1. An Introduction to Symmetry Protected Topological Phases

    University essay from Uppsala universitet/Teoretisk fysik

    Author : David Petrovic; [2023]
    Keywords : ;

    Abstract : In this thesis, we aim to display characteristics of symmetry protected topological phases within quantum mechanics (QM). Building on well known aspects of QM, we relate the formalism to basic group representation theory, and review the connection between projective symmetries and protected vacuum degeneracies. READ MORE

  3. 2. Majorana bound states in chains of interacting quantum dots

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen; Lunds universitet/NanoLund: Centre for Nanoscience

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

    Abstract : 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. READ MORE

  4. 3. Transversal Construction of Topological Gates on Multiqubit Quantum Codes

    University essay from Uppsala universitet/Materialteori

    Author : Sheila Chauwinoir; [2022]
    Keywords : entanglement; local SU 2 evolution; topological phase factors; topological gates; transversal gates; multiqubit quantum codes; Hopf fibration;

    Abstract : We study the possibility of constructing quantum gates using topological phases, which originate from local SU(2) evolution of entangled multiqubit systems. For this purpose, logical codewords using two-, three- and nine-qubit entangled states are defined and possible implementations of topological gates on these codes, are examined. READ MORE

  5. 4. Topological Photonic Lattices

    University essay from KTH/Tillämpad fysik

    Author : Zesheng Xu; [2022]
    Keywords : Topological photonics; Integrated photonics; Condensed matter physics physics; Optics; Topologisk fotonik; integrerad fotonik; fysik för kondenserad materia; Optik;

    Abstract : Topological Photonics is a rapidly growing field which explores the ideas of topological invariants adapted from condensed matter physics to optical systems. Thanks to integrated photonics platforms, the evolution of light in nanoscale photonic lattices can enable direct measurement of topological properties of the band-structure. READ MORE

  6. 5. Wannier Functions in non-Hermitian Systems

    University essay from KTH/Fysik

    Author : Alberto Zorzato; [2022]
    Keywords : Theoretical Physics; Condensed Matter Physics; non-Hermitian Systems; Wannier Functions;

    Abstract : The scope of this thesis is analyzing and characterizing certain gapless states in tight-binding non-Hermitian systems. We start by providing a pedagogical introduction to tight-binding theory, topological phases of matter, Wannier functions as real-space duals of Bloch functions and their properties, non-Hermitian systems and associated differences from standard Hermitian systems. READ MORE