Analytical solutions by squeezing to the anisotropic Rabi model in the nonperturbative deep-strong-coupling regime
Analytical solutions by squeezing to the anisotropic Rabi model in the nonperturbative deep-strong-coupling regime
A novel, unexplored nonperturbative deep-strong coupling (npDSC) achieved in superconducting circuits has been studied in the anisotropic Rabi model by the generalized squeezing rotating-wave approximation (GSRWA). Energy levels are evaluated analytically from the reformulated Hamiltonian and agree well with numerical ones under a wide range of coupling strength. Such improvement …