Nonperturbative Analytical Diagonalization of Hamiltonians with Application to Circuit QED
Boxi Li, Tommaso Calarco, Felix Motzoi · PRX Quantum · 2022
Symbolic methods for computing effective Hamiltonian models are presented that do not rely on assumptions of perturbations and can exponentially decrease the number of terms compared with the ubiquitous Schrieffer-Wolff method.