Speaker
Description
We introduce a previously unidentified paradigm for the direct experimental realization of excitation dynamics of three-dimensional networks by exploiting the hybrid action of spatial and polarization degrees of freedom of photon pairs propagating in coupled waveguide circuits with tailored birefringence. The photons exhibit Hong-Ou-Mandel-like interference simultaneously in both degrees of freedom. In a cubic graph, their interference pattern follows a recently predicted suppression law, imposed by the graph’s underlying symmetry. Moreover, the presented platform can serve as a testbed for the experimental exploration of multiparticle quantum walks on complex, highly connected graphs, suggesting a route towards exploring the dynamics of fermions in integrated quantum photonics.