Integration of Graphene-Based Superconducting Quantum Circuits in a Three-Dimensional Cavity

Prof. Kuei-Lin Chiu - Dept. of Physics, NSYSU

Integration of Graphene-Based Superconducting Quantum Circuits in a Three-Dimensional Cavity

Prof. Kuei-Lin Chiu - Dept. of Physics, NSYSU

Share this post:

Share this post:

DATE

2025-11-24

TIME

12:10-13:10

PLACE

R36173, 1F, Dept. of Physics, Building of Science College, NCKU

FIELD

Quantum Information Science

SPEAKER

Prof. Kuei-Lin Chiu - Dept. of Physics, NSYSU

TITLE

Integration of Graphene-Based Superconducting Quantum Circuits in a Three-Dimensional Cavity

ABSTRACT

Integrating two-dimensional (2D) materials into circuit quantum electrodynamics (cQED) devices has emerged as an active research direction in recent years. Such integration not only enables the exploration of potential applications in quantum information processing but also provides a platform for probing the fundamental properties of these materials using microwave techniques. While most studies employ two-dimensional coplanar architectures with strong scalability potential, three-dimensional (3D) cavity-based cQED devices offer faster turnaround for investigating composite Josephson junctions (JJs) and greater flexibility in tuning the qubit–cavity coupling.

In this talk, we will present a series of graphene-based transmons integrated with various 3D cavities. In the first part, we demonstrate a range of qubit–cavity coupling scenarios realized using single- and two-qubit devices paired with 3D cavities of different resonant frequencies. In the second part, we discuss a possible supersplitting effect observed in a system where two cavity modes are coupled to the same graphene transmon.