  A supersymmetric method for the construction of so-called conditionally
exactly solvable quantum systems is reviewed and extended to classical
stochastic dynamical systems characterized by a Fokker-Planck equation with
drift. A class of drift-potentials on the real line as well as on the half line
is constructed for which the associated Fokker-Planck equation can be solved
exactly. Explicit drift potentials, which describe mono-, bi-, meta-or unstable
systems, are constructed and their decay rates and modes are given in closed
form.
