Optical-microwave-quantum transducer

An optical-microwave-quantum transducer comprising:

• a cantilever comprising
• a mechanical coupler that is electrically coupled to a superconducting cavity, the mechanical coupler being configured to mechanically excite in response to an electrical pulse induced by photons emitted from the superconducting cavity on the mechanical coupler;
• and
• an optical cavity having at least two rows of holes formed in a nanophotonic crystal and being mechanically coupled to the mechanical coupler, wherein a given hole in the nanophotonic crystal has an axis that extends through a center of the given hole and intersects with a tapered optical fiber, wherein the optical cavity is configured to induce optical modulation on the tapered optical fiber in response to the mechanical excitation of the mechanical coupler.

A system comprising:

• a refrigeration unit that stores an optical-microwave-quantum transducer at superconducting temperatures, the optical-microwave-quantum transducer comprising:
• a node configured to transmit and receive optical pulses on an optical channel comprising an optical fiber, wherein the node is external to the refrigeration unit:
• and
• a cantilever comprising:
• an optical cavity that includes a nanophotonic crystal, the optical cavity being configured to provide mechanical excitation in response to electromagnetic excitation induced by photons emitted from the optical fiber;
• and
• a mechanical coupler being configured to induce electrical modulation onto a superconducting cavity in response to the mechanical excitation and to provide mechanical excitation in response to electromagnetic excitation induced by photons from the superconducting cavity, wherein the optical cavity is further configured to provide electromagnetic excitation that induces optical modulation on the optical fiber in response to the mechanical excitation.