  Quantum entanglement, a key element for quantum information is generated with
a cavity-magnomechanical system. It comprises of two microwave cavities, a
magnon mode and a vibrational mode, and the last two elements come from a YIG
sphere trapped in the second cavity. The two microwave cavities are connected
by a superconducting transmission line, resulting in a linear coupling between
them. The magnon mode is driven by a strong microwave field and coupled to
cavity photons via magnetic dipole interaction, and at the same time interacts
with phonons via magnetostrictive interaction. By breaking symmetry of the
configuration, we realize nonreciprocal photon transmission and one-way
bipartite quantum entanglement. By using current experimental parameters for
numerical simulation, it is hoped that our results may reveal a new strategy to
built quantum resources for the realization of noise-tolerant quantum
processors, chiral networks, and so on.
