As an application in circuit quantum electrodynamics coupled systems, superconducting resonators play an important role in high-sensitivity measurements in a superconducting-semiconductor hybrid architecture. Taking advantage of a high-impedance $\mathrm{Nb}\text{−}\mathrm{Ti}\text{−}\mathrm{N}$ resonator, we perform excited-state spectroscopy on a $\mathrm{Ga}\mathrm{As}$ double quantum dot (DQD) by applying voltage pulses to one gate electrode. The pulse train modulates the DQD energy detuning and gives rise to charge state transitions at zero detuning. Benefiting from the outstanding sensitivity of the resonator, we distinguish different spin-state transitions in the energy spectrum according to the Pauli exclusion principle. Furthermore, we experimentally study how the interdot tunneling rate modifies the resonator response. The experimental results are consistent with the simulated spectra based on our model.

中文翻译：

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微波共振器检测到的双量子点的激发态光谱。

作为电路量子电动力学耦合系统中的应用，超导谐振器在超导半导体混合架构中的高灵敏度测量中起着重要作用。利用高阻抗$铌\text{-}钛\text{-}\mathrm{ñ}$ 谐振器，我们对一个 $嘎\mathrm{作为}$通过向一个栅电极施加电压脉冲来实现双量子点（DQD）。脉冲序列调制DQD能量失谐，并在零失谐时引起电荷状态跃迁。得益于谐振器出色的灵敏度，我们根据保利（Pauli）排除原理在能谱中区分了不同的自旋态跃迁。此外，我们实验研究点间隧穿速率如何修改谐振器响应。实验结果与基于我们模型的模拟光谱相吻合。