Electrically driven and exponentially enhanced spin–photon interfaces for quantum networks

We present an electrically driven scheme for spin–photon quantum interfaces used in quantum networks. Through modulating the motion of a nano-cantilever with voltages, optomechanical coupling and spin–mechanical coupling can be exponentially enhanced simultaneously. Numerical simulations show that by applying well-designed voltages high-fidelity quantum interface operations such as generation and absorption of a single photon with a known wave packet are within the reach of current techniques.