论文标题
当在多Qubit芯片上执行量子线测量时，测量了什么？
What is measured when a qubit measurement is performed on a multi-qubit chip?
论文作者
论文摘要
我们研究单量化色散读数如何与两个量子耦合一起工作。为了在分析上进行计算，我们使用一个简化的模型，该模型保留了核心特征，但与分散性同伴检测相比是离散的。我们展示了如何测量速度和功率确定访问有关量子的哪些信息。具体而言，我们发现该测量最接近投影的基础。与基础门相比，在读数谐振器中存在光子的存在来修改该测量基础。
We study how single-qubit dispersive readout works alongside two qubit coupling. To make calculations analytically tractable, we use a simplified model which retains core characteristics of but is discretised compared to dispersive homodyne detection. We show how measurement speed and power determine what information about the qubit(s) is accessed. Specifically we find the basis the measurement is closest to projecting onto. Compared to the basis gates are applied in, this measurement basis is modified by the presence of photons in the readout resonator.
