Millimeter-wave interconnects for microwave-frequency quantum machines

Understand

Superconducting microwave circuits form a versatile platform for storing and manipulating quantum information.

• A major challenge to further scalability is to find approaches for connecting these systems over long distances and at high rates.
• One approach is to convert the quantum state of a microwave circuit to optical photons that can be transmitted over kilometers at room temperature with little loss.
• Many proposals for electro-optic conversion between microwave and optics use optical driving of a weak three-wave mixing nonlinearity to convert the frequency of an excitation.