Quantum information and entropy squeezing of a two-level atom with a non-linear medium

In the language of quantum information theory we study the entropy squeezin g of a two-level atom in a Kerr-like medium. A definition of squeezing is p resented for this system, based on information theory. The utility of the d efinition is illustrated by examining the entropy squeezing of a two-level atom with a Kerr-like medium. The influence of the non-linear interaction o f the Kerr medium, the atomic coherence and the detuning parameter on the p roperties of the entropy and squeezing of the atomic variables is examined.