Resilient intraparticle entanglement and its manifestation in spin dynamics of disordered Dirac materials

Topological quantum matter exhibits transport phenomena driven by entanglement between internal degrees of freedom, as, for instance, generated by spin-orbit coupling effects. Here we report on a direct connection between the mechanism driving spin relaxation and the intertwined dynamics between spin and sublattice degrees of freedom in disordered graphene. Beyond having a direct observable consequence, such intraparticle entanglement is shown to be resilient to disorder, pointing towards a unique resource for quantum information processing.