Effective Hamiltonian models of the cross-resonance gate

作者：Easwar Magesan, Jay Gambetta · 发表于：Physical Review A · 年份：2020 · DOI：10.1103/physreva.101.052308 · 被引用次数：216 · 研究领域：Quantum Information and Cryptography、Quantum and electron transport phenomena、Quantum Computing Algorithms and Architecture

Effective Hamiltonian methods are utilized to model the two-qubit cross-resonance gate for both the ideal two-qubit case and when higher levels are included. Analytic expressions are obtained in the qubit case and the higher-level model is solved both perturbatively and numerically, with the solutions agreeing well in the weak-drive limit. The methods are applied to parameters from recent experiments and, accounting for classical cross-talk effects, results in good agreement between theory and experimental results.