Quantum information processing with trapped electrons and superconducting electronics

TL;DR

This paper proposes a noise-robust scheme for quantum information transfer between trapped electrons and superconducting circuits using parametric frequency conversion based on geometric non-linearities.

Contribution

It introduces a novel, passive frequency conversion method enabling coherent interfaces between atomic and solid-state quantum systems.

Findings

Scheme is immune to noise in actively driven solid-state devices

Provides a toolbox for electron-based quantum computing platforms

Enables quantum interfaces between trapped electrons and superconducting electronics

Abstract

We describe a parametric frequency conversion scheme for trapped charged particles which enables a coherent interface between atomic and solid-state quantum systems. The scheme uses geometric non-linearities of the potential of a coupling electrode near a trapped particle. Our scheme does not rely on actively driven solid-state devices, and is hence largely immune to noise in such devices. We present a toolbox which can be used to build electron-based quantum information processing platforms, as well as quantum interfaces between trapped electrons and superconducting electronics.