Entangling a nanomechanical resonator and a superconducting microwave cavity

TL;DR

This paper proposes a scheme to generate steady-state entanglement between a nanomechanical resonator and a superconducting microwave cavity, enabling quantum control at relatively high temperatures.

Contribution

It introduces a novel method for entangling mechanical and microwave quantum systems using capacitive coupling in a superconducting circuit.

Findings

Steady-state entanglement is achievable at temperatures up to tens of milliKelvin.

The scheme utilizes capacitive coupling in a superconducting coplanar waveguide.

Entanglement persists under realistic experimental conditions.

Abstract

We propose a scheme able to entangle at the steady state a nanomechanical resonator with a microwave cavity mode of a driven superconducting coplanar waveguide. The nanomechanical resonator is capacitively coupled with the central conductor of the waveguide and stationary entanglement is achievable up to temperatures of tens of milliKelvin.