  Artificial gauge fields, simulating real phenomenologies that unfold in a
vast variety of systems, offer extraordinary possibilities to study extreme
physical effects in many different environments, from high energy physics to
quantum mechanics and cosmology. They are also at the heart of topological
physics. Here, exploiting a strongly anisotropic material under strong coupling
regime, we experimentally synthesize a Yang-Mills non-Abelian gauge field
acting on an exciton-polariton quantum flow like a magnetic field. We observe
experimentally the corresponding curved trajectories and spin precession. This
motion follows chromodynamics equations which normally describe the quarks
strong interactions and their color. Our work therefore opens exciting
perspectives of simulating quark-gluon dynamics using highly flexible photonic
simulators. It makes of sub-atomic physics a potential new playground to apply
topological physics concepts.
