  Discrete time (coined) quantum walks are produced by the repeated application
of a constant unitary transformation to a quantum system. By recasting these
walks into the setting of periodic perturbations to an otherwise freely
evolving system we introduce the concept of a stroboscopic quantum walk.
Through numerical simulation, we establish the link between families of
stroboscopic walks and quantum resonances. These are observed in the nonlinear
systems of quantum chaos theory such as the delta-kicked rotator or the
delta-kicked accelerator.
