Coupling Graphene Mechanical Resonators to Superconducting Microwave Cavities

摘要: Graphene is an attractive material for nanomechanical devices because it allows exceptional properties, such as high frequencies, quality factors, and low mass. An outstanding challenge, however, has been to obtain large coupling between the motion external systems efficient readout manipulation. Here, we report on a novel approach, in which capacitively couple high-Q graphene mechanical resonator (Q ≈ 105) superconducting microwave cavity. The initial exhibit single-photon of ∼10 Hz. Remarkably, can electrostatically change equilibrium position thereby tune single photon coupling, resonance frequency, sign magnitude observed Duffing nonlinearity. strong tunability opens up new possibilities, tuning optomechanical strength time scale faster than inverse cavity line width. With realistic improvements, should be possible enter regime quantu...