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 quantum electrodynamics (QED) coupled qubits.

我们开发了一种新的光谱方法，可以通过高阻抗谐振器快速直观地表征两个微波-光子耦合半导体量子位的耦合。当我们根据调解光子的频率调整量子位隧道耦合时，会显示出高度独特和独特的几何图案。这些模式与使用 Tavis-Cummings 模型的模拟非常一致，并使我们能够轻松识别失谐空间中两个量子位的不同参数机制。这种方法可能是整个光谱工具箱中的一个重要组成部分，用于快速表征多腔量子电动力学 (QED) 耦合量子位的某些集体特性。