In the present paper, standard Jaynes Cummings model involving multiphoton interaction
between the field and the atom has been considered. We study the variation of entanglement
properties of a pair of two–level Rydberg atoms passing one after another into a lossless cavity with
single mode multiphoton interaction. The initial joint state of two successive atoms that enter the
cavity is unentangled. Interactions mediated by the cavity field results in the final two atoms mixed
entangled type state. The entanglement of formation of the joint two atom state as a function of the
Rabi angle gt is calculated for Fock state field and Coherent state field. A comparative analysis is done
to study the extent of atoms being entangled when they interact through a cavity mode of single
frequency but via different orders of interaction.
