Superconducting Qubit Storage and Entanglement with Nanomechanical Resonators

TL;DR

This paper proposes a quantum computing architecture that integrates nanomechanical resonators with Josephson qubits to enable scalable, multi-qubit operations in a solid-state system.

Contribution

It introduces a novel hybrid system combining nanomechanical resonators with Josephson qubits for quantum computation.

Findings

Demonstrates implementation of single- and multi-qubit operations

Shows potential for scalable quantum processing

Combines advantages of solid-state and cavity-QED systems

Abstract

We describe a quantum computational architecture based on integrating nanomechanical resonators with Josephson junction phase qubits, with which we implement single- and multi-qubit operations. The nanomechanical resonator is a GHz-frequency, high-quality-factor dilatational resonator, coupled to the Josephson phase through a piezoelectric interaction. This system is analogous to one or more few-level atoms (the Josephson qubits) in a tunable electromagnetic cavity (the nanomechanical resonator). Our architecture combines the best features of solid-state and cavity-QED approaches, and may make possible multi-qubit processing in a scalable, solid-state environment.