Multilayer microwave integrated quantum circuits for scalable quantum computing

TL;DR

This paper proposes a multilayer microwave integrated quantum circuit platform that combines integrated fabrication and long coherence times, aiming to enable scalable superconducting quantum computing architectures.

Contribution

It introduces a novel multilayer microwave integrated quantum circuit platform that addresses scalability and controllability challenges in superconducting quantum computing.

Findings

Proposes a multilayer quantum circuit architecture.

Combines integrated fabrication with 3D cQED advantages.

Provides a pathway toward scalable quantum devices.

Abstract

As experimental quantum information processing (QIP) rapidly advances, an emerging challenge is to design a scalable architecture that combines various quantum elements into a complex device without compromising their performance. In particular, superconducting quantum circuits have successfully demonstrated many of the requirements for quantum computing, including coherence levels that approach the thresholds for scaling. However, it remains challenging to couple a large number of circuit components through controllable channels while suppressing any other interactions. We propose a hardware platform intended to address these challenges, which combines the advantages of integrated circuit fabrication and long coherence times achievable in three-dimensional circuit quantum electrodynamics (3D cQED). This multilayer microwave integrated quantum circuit (MMIQC) platform provides a path toward the realization of increasingly complex superconducting devices in pursuit of a scalable quantum computer.