  Quantum resources such as superposition and entanglement have been used to
provide unconditional key distribution, secret sharing and communication
complexity reduction. In this letter we present a novel quantum information
protocol for dining cryptographers problem and anonymous vote casting by a
group of voters. We successfully demonstrate the experimental realization of
the protocol using single photon transmission. Our implementation employs a
flying particle scheme where a photon passes by the voters who perform a
sequence of actions (unitary transformations) on the photonic state at their
local stations.
