Easwar Magesan, Jay M. Gambetta, et al.
Physical Review Letters
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.
Easwar Magesan, Jay M. Gambetta, et al.
Physical Review Letters
Jeffrey M. Epstein, Andrew W. Cross, et al.
Physical Review A - AMO
Jerry M. Chow, Jay M. Gambetta, et al.
New Journal of Physics
Nicholas T. Bronn, Easwar Magesan, et al.
IEEE TAS