We use dispersion engineering to control the signal propagation speed in the feed lines of superconducting single-photon detectors. Using this technique, we demonstrate time-division-multiplexing of two-pixel detectors connected with a slow-RF transmission line, all realized using planar geometry requiring a single lithographic step. Through studying the arrival time of detection events in each pixel vs the fabricated slow-RF coplanar waveguide length, we extract a delay of 1.7 ps per 1 μm of propagation, corresponding to detection signal speeds of ∼0.0019c. Our results open an important avenue to explore the rich ideas of dispersion engineering and metamaterials for superconducting detector applications.

中文翻译：

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用于单光子探测器多像素集成的超导波导的色散工程

我们使用色散工程来控制信号在超导单光子探测器馈线中的传播速度。使用该技术，我们演示了与慢速RF传输线连接的两个像素检测器的时分多路复用，所有这些检测器均使用需要单个光刻步骤的平面几何来实现。通过研究的检测事件的到达时间中的每个像素VS所制造的慢RF共面波导长度，我们提取每1 1.7 PS的延迟μ传播的米，对应~0.0019的检测信号速度Ç。我们的结果为探索用于超导探测器应用的色散工程和超材料的丰富思路提供了重要的途径。