Incorporating Multi-Qubit Coupling in Superconducting Qubit Modeling
Analysis
This paper addresses a critical limitation in superconducting qubit modeling by incorporating multi-qubit coupling effects into Maxwell-Schrödinger methods. This is crucial for accurately predicting and optimizing the performance of quantum computers, especially as they scale up. The work provides a rigorous derivation and a new interpretation of the methods, offering a more complete understanding of qubit dynamics and addressing discrepancies between experimental results and previous models. The focus on classical crosstalk and its impact on multi-qubit gates, like cross-resonance, is particularly significant.
Key Takeaways
- •Addresses limitations in existing superconducting qubit modeling by incorporating multi-qubit coupling.
- •Provides a rigorous derivation of how to embed multi-qubit effects into Maxwell-Schrödinger methods.
- •Offers a new interpretation of Maxwell-Schrödinger methods as a simulation strategy for non-Markovian open quantum systems.
- •Highlights the impact of classical crosstalk on multi-qubit gate performance, resolving discrepancies between experiments and previous models.
“The paper demonstrates that classical crosstalk effects can significantly alter multi-qubit dynamics, which previous models could not explain.”