  Remote state preparation (RSP) enables a sender to remotely prepare the
quantum state of a receiver without sending the state itself. Recently, it has
been recognized that quantum discord is a necessary resource for RSP. Here, we
theoretically and experimentally investigate whether RSP can outperform dynamic
classical remote state preparation processes. We show that such classical
processes can describe certain RSPs powered by quantum discord. Rather, we
argue that a new kind of Einstein-Podolsky-Rosen steering for dynamical
processes, called quantum process steering, is the resource required for
performing nonclassical RSP. We show how to measure quantum process steering by
experimentally realizing nonclassical RSP of photonic quantum systems.
Moreover, we demonstrate the transition from classical to quantum RSP. Our
results also have applications in realizing genuine quantum RSP for
quantum-enabled engineering.
