26 September 2023 Tue 4 pm

We suggest nanoelectromechanical setups and corresponding time-protocols for controlling parameters in order to demonstrate nanomechanical manipulation of superconducting charge-qubit quantum networks.  The setup is based on terminals utilizing the AC Josephson effect between bias voltage-controlled bulk superconductors and mechanically vibrating mesoscopic superconducting grain in the regime of the Cooper pair box, controlled by the gate voltage. The described manipulations of the quantum network is achieved by transduction of quantum information between charge qubits and intentionally built superposition of nanomechanical coherent states constituting the cat-state. This performance is achieved using quantum entanglement between electrical and mechanical states.

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