Flux tunable graphene-based superconducting quantum circuits coupled to 3D cavity

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

Flux tunable graphene-based superconducting quantum circuits coupled to 3D cavity

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

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DATE

2023-11-27    

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

Flux tunable graphene-based superconducting quantum circuits coupled to 3D cavity    

ABSTRACT

Correlation between transmon and its composite Josephson junctions (JJ) plays an important role in designing new types of superconducting qubits based on quantum materials. It is desirable to have a type of device that not only allows exploration for use in quantum information processing but also probing intrinsic properties in the composite JJs. Here, we construct a flux-tunable 3D transmon-type superconducting quantum circuit made of graphene as a proof-of-concept prototype device. This 3D transmon-type device not only enables coupling to 3D cavities for microwave probes but also permits DC transport measurements on the same device, providing useful connections between transmon-related parameters and critical currents associated with JJ’s properties. Our study paves the way towards integrating novel materials for exploration of new types of quantum devices for future technology while probing underlying physics in the composite materials.