N-level atom and (N-1) modes: an exactly solvable model with detuning and multiphotons
A.M. Abdel-Hafez, A.‐S. F. Obada, Mahmoud Ahmad · Journal of Physics A Mathematical and General · 1987
A model is presented for the interaction between an N-level atom and (N-1) modes. Under the exact resonance condition between the modes with a detuning parameter, the Hamiltonian becomes solvable. The evolution operator is calculated and the time development for the photon number operators and the occupation numbers are obtained. Multiphoton processes are discussed.