Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems

TL;DR

This paper reviews the development of hybrid quantum circuits that integrate different quantum systems like atoms, spins, and solid-state devices, highlighting their potential for scalable quantum technologies.

Contribution

It provides an overview of progress and approaches in integrating diverse quantum systems into hybrid circuits for advanced quantum applications.

Findings

Hybrid circuits combine atomic, spin, and solid-state systems.

Integration on a chip enables scalable quantum device development.

Hybrid circuits are promising for quantum detectors, simulators, and computers.

Abstract

Hybrid quantum circuits combine two or more physical systems, with the goal of harnessing the advantages and strengths of the different systems in order to better explore new phenomena and potentially bring about novel quantum technologies. This article presents a brief overview of the progress achieved so far in the field of hybrid circuits involving atoms, spins and solid-state devices (including superconducting and nanomechanical systems). How these circuits combine elements from atomic physics, quantum optics, condensed matter physics, and nanoscience is discussed, and different possible approaches for integrating various systems into a single circuit are presented. In particular, hybrid quantum circuits can be fabricated on a chip, facilitating their future scalability, which is crucial for building future quantum technologies, including quantum detectors, simulators, and computers.