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    Dynamical phase error in interacting topological quantum memories

    Coopmans, L. and Dooley, S. and Jubb, I. and Kavanagh, K. and Kells, Graham (2021) Dynamical phase error in interacting topological quantum memories. Physical Review Research, 3 (3). ISSN 2643-1564

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    A local Hamiltonian with topological quantum order (TQO) has a robust ground-state degeneracy that makes it an excellent quantum memory candidate. This memory can be corrupted however if part of the state leaves the protected ground-state manifold and returns later with a dynamically accrued phase error. Here we analyze how TQO suppresses this process and use this to quantify the degree to which spectral densities in different topological sectors are correlated. We provide numerical verification of our results by modeling an interacting p-wave superconducting wire.

    Item Type: Article
    Keywords: Dynamical phase error; interacting topological quantum memories;
    Academic Unit: Faculty of Science and Engineering > Theoretical Physics
    Item ID: 18420
    Identification Number:
    Depositing User: Graham Kells
    Date Deposited: 23 Apr 2024 15:28
    Journal or Publication Title: Physical Review Research
    Publisher: American Physical Society
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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