Nanomechanical manipulation of superconducting charge-qubit quantum networks

TL;DR

This paper proposes a nanoelectromechanical system for controlling and transmitting quantum information between superconducting charge-qubits using nanomechanical manipulation and entanglement, advancing quantum network capabilities.

Contribution

It introduces a novel nanoelectromechanical setup and protocol for manipulating and transmitting quantum information in superconducting charge-qubit networks.

Findings

Demonstrates nanomechanical control of quantum states.

Shows quantum information transfer via mechanical transduction.

Utilizes entanglement between electrical and mechanical states.

Abstract

We suggest a nanoelectromechanical setup and corresponding time-protocol for controlling parameters in order to demonstrate nanomechanical manipulation of superconducting charge-qubit quantum network. We illustrate it on an example reflecting important task for quantum information processing - transmission of quantum information between two charge-qubits facilitated by nanomechanics. 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 manipulation of quantum network is achieved by transduction of quantum information between charge-qubits and intentionally built nanomechanical coherent states, which facilitate its transmission between qubits. This performance is achieved using quantum entanglement between electrical and mechanical states.