Integration of graphene-based superconducting quantum circuits in a three-dimensional cavity

Authors

Kuei-Lin Chiu ⋅ TW Department of Physics, National Sun Yat-sen University

Abstract

Integrating two-dimensional (2D) materials into circuit quantum electrodynamics (cQED) devices is an emerging field in recent years. This integration not only facilitates the exploration of potential application in quantum information processing but also enables the study of material’s fundamental properties using microwave techniques. While most studies employ 2D coplanar architectures with scalability potential, three-dimensional (3D) cavity-based cQED devices, due to their simpler design, offer the advantage of a quicker turnaround to probe the composite Josephson junctions (JJs). Here, we construct the 3D cavity-compatible superconducting quantum circuit based on 2D materials, featuring a graphene superconducting quantum interference device (SQUID) shunted by a capacitor that is accessible by both dc and microwave probes. Our platform can extend to topological materials, holding the prospect of establishing valid topological JJs with a dc probe while allowing a fast microwave probe to avoid quasiparticle poisoning.

About the Speaker

Kuei-Lin Chiu, Department of Physics, National Sun Yat-sen University

Kuei-Lin Chiu is currently an Assistant Professor in the Department of Physics, National Sun Yat-sen University, Taiwan. Prior to this, he was an Associate Research Fellow (faculty) in the Key laboratory of Quantum information, University of Science and Technology of China (USTC) and a post-doc at the Department of Physics at MIT (2015−2017). He obtained his PhD from the Cavendish Laboratory in Cambridge University where he worked on quantum transport in 2D material-based quantum dots involving using microwave to control single electrons. He received his BSc degree in applied physics from National Chia-Yi University (2000−2004) and his MSc degree in physics from National Chiao-Tung University (2004−2006).

Dr. Chiu also serves as a Consultant at the Quantum Computing Research Center, Hon Hai (Foxconn) Research Institute (since July 2021), a Guest Editor for SPIN (April 2023 − February 2024), and a Local Organizing Committee member for the Quantum Information Processing (QIP) 2024 international conference. As of January 2025, he began serving as a Consultant for Taiwan's Ministry of Education on matters related to the development of quantum science and technology.

Downloads

Issue

2025: Proceedings of the 43rd Samahang Pisika ng Pilipinas Physics Conference

Entangled!
25-28 June 2025, National Institute of Physics, University of the Philippines Diliman

Please visit the SPP2025 activity webpage for more information on this year's Physics Congress.

Article ID

SPP-2025-INV-1D-01

Section

Invited Presentations

Published

2025-06-25

How to Cite

[1]

K-L Chiu, Integration of graphene-based superconducting quantum circuits in a three-dimensional cavity, Proceedings of the Samahang Pisika ng Pilipinas 43, SPP-2025-INV-1D-01 (2025). URL: https://proceedings.spp-online.org/article/view/SPP-2025-INV-1D-01.