Xi’an Jiaotong University Details Tripartite Electron-Magnon Coupling

Researchers at the School of Physics, Xi’an Jiaotong University report a novel mechanism for strong coupling in hybrid quantum systems, predicting a nonlinear interaction where two phonons simultaneously interact with a single spin and magnon excitation. This tripartite coupling leverages an electron’s charge, spin, and motional degrees of freedom, moving beyond the typical two-way interactions seen in these systems. The team demonstrates that this setup, combining a trapped electron and a micromagnet, allows for a tunable and strong spin-magnon-motion coupling at the single quantum level. This capability, they say, enables magnons to mediate coupling between the degrees of freedom of two electrons, potentially offering a route to the rapid preparation…