  We propose a scheme to achieve the quantum state transfer via the topological
protected edge channel based on a one dimensional frequency-modulated
optomechanical array. We find that the optomechanical array can be mapped into
a Su-Schrieffer-Heeger model after eliminating the counter rotating wave terms
via frequency modulations. By dint of the edge channel of the
Su-Schrieffer-Heeger model, we show that the quantum state transfer between the
photonic left edge state and the photonic right edge state can be achieved with
a high fidelity. Specially, our scheme can also achieve another phononic
quantum state transfer based on the same channel via controlling the
next-nearest-neighboring interactions between the cavity fields, which is
different from the previous investigations only achieving one kind of quantum
state transfer. Our scheme provides a novel path to switch two different kinds
of quantum state transfers in a controllable way.
