▎ 摘　　要

The valley physics in the two-dimensional graphenelike system has been put forward recently, and one of the key issues is to produce valley currents. We propose in this work to realize the topological valley resonance effect in graphene by using the time-dependent lattice vibration of optical phonon modes, which can pump out a noiseless and quantized valley current flowing into graphene leads. This optimal topological valley pump is protected by a nonzero valley Chern number and is robust against perturbations that could even break the time-reversal symmetry and valley conservation. The electrical measurement of the pumped valley currents is also discussed.