A Surface Acoustic Wave based Single Photon Shifter for Solid-state Sources

Controlling the frequency of nonclassical light is indispensable for implementing quantum computation, communication and bridging various quantum systems. However, frequency-shift devices for solid state single-photon sources that are easy to integrate are practically absent. Here, we propose an integrated single-photon frequency shifter based on acousto-optic modulation. The device consists of two Interdigital Transducers (IDTs) for surface acoustic wave (SAW) generation and a silicon waveguide periodically placed at the nodes the SAW to increase the interaction length. The V{\pi}*L of the device is 1.2v.cm. Under 133.2MHz driving frequency and 10 volt driving voltage, a shift up to 65.7GHz is achieved with near unity conversion efficiency. Our results demonstrate the feasibility of on-chip deterministic quantum spectral control in constructing hybrid quantum networks.