Atomic ionization driven by the quantized electromagnetic field in a Fock state

Abstract

We consider ionization of an atom by the electromagnetic field in a Fock state vertical bar N >: An eigenvector of the operator (N) over cap (k, lambda) = (a) over cap (dagger)(k, lambda) (a) over cap (k, lambda) of the number of photons in the mode k, lambda. We treat the electromagnetic field in a quantized way, which allows us to obtain the photon picture of the strong field ionization. We obtain, in particular, probability distributions for the number of absorbed photons in the process of strong field ionization for atomic systems governed by short-range and Coulomb potentials.