  The Aharon-Vaidman (AV) game exemplifies the advantage of using simple
quantum systems to outperform classical strategies. We present an experimental
test of this advantage by using a three-state quantum system (qutrit) encoded
in a spatial mode of a single photon passing through three slits. The
preparation of a particular state is controlled as the photon propagates
through the slits by varying the number of open slits and their respective
phases. The measurements are achieved by placing detectors in the specific
positions in the near and far fields after the slits. This set of tools allowed
us to perform tomographic reconstructions of generalized qutrit states, and to
implement the quantum version of the AV game with compelling evidence of the
quantum advantage.
