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Coopmans, L., Dooley, S., Jubb, I., 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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PhysRevResearch.3.033105.pdf
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Official URL: https://doi.org/10.1103/PhysRevResearch.3.033105
Abstract
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: | 10.1103/PhysRevResearch.3.033105 |
| Depositing User: | Graham Kells |
| Date Deposited: | 23 Apr 2024 15:28 |
| Journal or Publication Title: | Physical Review Research |
| Publisher: | American Physical Society |
| Refereed: | Yes |
| Related URLs: | |
| URI: | https://mu.eprints-hosting.org/id/eprint/18420 |
| 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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