via the microwave photon-mediated Raman interaction. Magnons in a macroscopic
ferromagnet and optical photons in a cavity are induced into a Raman interaction with an
atomic spin ensemble when a microwave field couples the magnons to one Raman wing.
The controllable magnon-atom entanglement, magnon-optical photon entanglement, and
even genuine magnon-atom-optical photon tripartite entanglement can be generated …