Opto-Electro-Mechanical Transduction of Noisy Coherent States

To create remote networks of superconducting qubits over distances beyond a single cryogenic system, quantum transducers are necessary to convert quantum information to optical frequencies. One strategy for connecting such transducers is to down-convert optically produced squeezed states, which carry entanglement correlations in their local noise spectra. To this end we operate a quantum transducer based on a mechanical Si3N4 membrane coupled to optical and microwave frequency resonators, to do down-convert noise modulated classical states of light. In this talk I will discuss our efforts to quantify the effect of the transducer quantum channel on noise correlations between states input to and output from the device.