Fragility of gate-error metrics in simulation models of flux-tunable transmon quantum computers
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2023-08-08 |
| Journal | Physical review. A/Physical review, A |
| Authors | Hannes Lagemann, Dennis Willsch, Madita Willsch, Fengping Jin, Hans De Raedt |
| Institutions | Forschungszentrum JĆ¼lich, University of Groningen |
| Citations | 3 |
Abstract
Section titled āAbstractāConstructing a quantum computer requires immensely precise control over a quantum system. A lack of precision is often quantified by gate-error metrics, such as the average infidelity or the diamond distance. However, usually such gate-error metrics are only considered for individual gates and not the errors that accumulate over consecutive gates. Furthermore, it is not well known how susceptible the metrics are to the assumptions which make up the model. Here we investigate these issues using realistic simulation models of quantum computers with flux-tunable transmons and coupling resonators. Our main findings reveal that (i) gate-error metrics are indeed affected by the many assumptions of the model, (ii) consecutive gate errors do not accumulate linearly, and (iii) gate-error metrics are poor predictors for the performance of consecutive gates. Additionally, we discuss a potential limitation in the scalability of the studied device architecture.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2011 - Quantum Computation and Quantum Information
- 2018 - The Theory of Quantum Information [Crossref]