  We show that the atom as a "quantum entity", driven by an external field in
the form of pulse sequence at repetition rate equal to the internal quantum
frequency divided by an integer n, responds resonantly. It seeks and finds its
characteristic frequencies in any possible combination of its frequencies. This
is an indication of self expression by the atom at many sub-frequencies of its
own transition frequencies. It is a non-intuitive phenomenon since the external
repetition rate has no quantum character, yet the atom responds to it if the
rate is equal to 1/n its eigen-frequency. We believe that our results will have
implications in other quantum related processes, such as resonant enhancement
of chemical reactions and biological processes.
