标题： 过渡边缘传感器测热计的1820通道多路复用器演示 显示英文标题

标题： Demonstration of a 1820 channel multiplexer for transition-edge sensor bolometers

摘要： 大多数过渡边缘传感器阵列的可扩展性受到多路复用技术的限制，该技术将它们的信号通过较少的导线和放大器进行合并。 在本信中，我们提出并演示了一种针对过渡边缘传感器测热计的多路复用器设计，每个读出单元有1820个传感器，是之前最先进的两倍。 该设计优化用于宇宙微波背景成像应用，并通过将可用的读出带宽加倍至完整的4-8 GHz八度，改进了之前的微波超导量子干涉装置多路复用器。 通过实验室测试评估了良率、灵敏度和串扰等关键性能指标，我们发现端到端可操作探测器良率为78%，典型的最近邻串扰幅度为$\sim$0.4%，以及由于多路复用器引起的中位白噪声水平为83 pA/$\sqrt{\mathrm{Hz}}$，这对应于地面宇宙微波背景望远镜总系统噪声的估计贡献为4%。 此外，我们识别出一条可能的路径，以在未来的设计中减少谐振器损耗，从而降低噪声。 显示英文摘要

摘要： The scalability of most transition-edge sensor arrays is limited by the multiplexing technology which combines their signals over a reduced number of wires and amplifiers. In this letter, we present and demonstrate a multiplexer design optimized for transition-edge sensor bolometers with 1820 sensors per readout unit, a factor of two larger than the previous state-of-the-art. The design is optimized for cosmic microwave background imaging applications, and it builds on previous microwave superconducting quantum interference device multiplexers by doubling the available readout bandwidth to the full 4--8 GHz octave. Evaluating the key performance metrics of yield, sensitivity, and crosstalk through laboratory testing, we find an end-to-end operable detector yield of 78%, a typical nearest-neighbor crosstalk amplitude of $\sim$0.4%, and a median white noise level of 83 pA/$\sqrt{\mathrm{Hz}}$ due to the multiplexer, corresponding to an estimated contribution of 4% to the total system noise for a ground-based cosmic microwave background telescope. Additionally, we identify a possible path toward reducing resonator loss for future designs with reduced noise.