2020/01/31 by Bao-Chuan Wang, Bao‐Chuan Wang, Ting Lin +12 · 30 citations
Computer Science · Physics and Astronomy · #Coupling (piping) #Microwave #Microwave cavity #Optoelectronics #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Resonator #Semiconductor #Superconducting quantum computing #cond-mat.mes-hall
paper · pdf · doi:10.1016/j.scib.2020.10.005
published in 中国科学通报：英文版 66(4), 332-338 · 13 pages, 4 figures
openalex publication_date 2020/10/14 · arxiv created 2020/11/07 · arxiv updated 2020/11/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We develop a new spectroscopic method to quickly and intuitively characterize the coupling of two microwave-photon-coupled semiconductor qubits via a high-impedance resonator. Highly distinctive and unique geometric patterns are revealed as we tune the qubit tunnel couplings relative to the frequency of the mediating photons. These patterns are in excellent agreement with a simulation using the Tavis-Cummings model, and allow us to readily identify different parameter regimes for both qubits in the detuning space. This method could potentially be an important component in the overall spectroscopic toolbox for quickly characterizing certain collective properties of multiple cavity QED coupled qubits.