Microwave-to-optical transduction in a silicon-organic-hybrid platform

In order to realize long distance quantum networks in which superconducting quantum processors are connected by optical fiber links, it is necessary to transduce quantum signals from the microwave domain to the optical domain and vice versa. Here, we present progress towards electro-optic photon conversion using a silicon-organic hybrid photonic platform. Our device uses a high-Q photonic crystal cavity and superconducting microwave resonator to simultaneously confine optical and microwave electric fields. We achieve a room temperature electro-optic tuning rate of 3.7 pm/V and demonstrate microwave-to-optical photon conversion in a milliKelvin dilution fridge environment. Our device provides nearly 10 dB selectivity between the generated Stokes and anti-Stokes sidebands, which we can resolve using a heterodyne spectroscopy technique. Finally, we examine the deleterious effects of quasiparticle generation due to stray light and discuss techniques to mitigate this.