Entropy properties of the field or the atom in the interacting system of two-mode field with the V-type three-level atom in a Kerr-like medium

Using the method of the systematic state vector we formulate the entropy of the V-type three-level atom interacting with initially uncorrelated two-mode coherent states of arbitrary detunings in a cavity filled with Kerr-like medium. It is shown by numerical calculation that the behavior of the entropy is strongly affected by the Kerr medium. Weak Kerr medium improves the quantum correlation. Stronger Kerr medium induces strongly periodic fluctuation of the quantum correlation between the atom and the fields.