Experiments towards falsification of noncontextual hidden variable theories

We present two experiments testing the hypothesis of noncontextual hidden v ariables. The first one is based on observation of two-photon pseudo-Greenb erger-Horne-Zeilinger correlations, with two of the originally three partic les mimicked by the polarization degree of freedom and the spatial degree o f freedom of a single photon. The second one, a single-photon experiment, u tilizes the same trick to emulate two particle correlations, and is an "eve nt ready" test of a Bell-like inequality, derived from the noncontextuality assumption. Module fair sampling, the data falsify noncontextual hidden va riables.