Entropy in a system constitute by an atom and a photon

Suppose that we have an atom $$A$$ in an excited state. This atom has a probability of emitting a photon $$\gamma$$. If we are in a finite space there is a probability that the atom $$A$$ absorbs the photon $$\gamma$$.
My question is when the atom emits the photon is the entropy ($$S$$) greater than zero? If so,when the atom absorbs the photon is the entropy ($$S$$) less than zero?

• maybe you should read the definition of entropy en.wikipedia.org/wiki/Entropy and reform your question. A single atom cannot have entropy , can contribute to a statistical ensemble, but it is the ensemble that has entropy. – anna v Sep 12 at 15:05