  Quantum correlations between two neighbor atoms are studied. It is assumed
that one atomic system comprises a single auto-ionizing level and the other
atom does not contain any auto-ionizing level. The excitation of both atoms is
achieved by the interaction with the same mode of the quantized field. It is
shown that the long-time behavior of two atoms exhibits quantum correlations
even when the atoms do not interact directly. This can be shown using the
optical excitation of the neighbor atom. Also a measure of entanglement of two
atoms can be applied after reduction of the continuum to two levels.
