  Correlations between entangled photons are a key ingredient for testing
fundamental aspects of quantum mechanics and an invaluable resource for quantum
technologies. However, scattering from a dynamic medium typically scrambles and
averages out such correlations. Here we show that multiply-scattered entangled
photons reflected from a dynamic complex medium remain partially correlated. We
observe in experiments and in full-wave simulations enhanced correlations,
within an angular range determined by the transport mean free path, which
prevail disorder averaging. Theoretical analysis reveals that this enhancement
arises from the interference between scattering trajectories, in which the
photons leave the sample and are then virtually reinjected back into it. These
paths are the quantum counterpart of the paths that lead to the coherent
backscattering of classical light. This work points to opportunities for
entanglement transport despite dynamic multiple scattering in complex systems.
