论文标题
用于使用AQFP和RSFQ逻辑系列的超导纳米线单光子检测器的可扩展读数接口
Scalable readout interface for superconducting nanowire single-photon detectors using AQFP and RSFQ logic families
论文作者
论文摘要
我们提出了一个可扩展的读取接口，用于超导纳米线单光子检测器（SSPD）数组，我们称为AQFP/RSFQ接口。该界面由绝热量子 - 频率 - parametron（AQFP）和快速的单频量子量子（RSFQ）逻辑家族组成。 AQFP部分通过单个电缆读取SSPD阵列的空间信息，RSFQ部分通过单个电缆读取时间信息。由于RSFQ部件的操作中的时间较低，因此混合接口具有高时间分辨率。另外，由于AQFP部分的运行中的供应电流低，混合界面可实现高电路可伸缩性。因此，混合界面适用于处理许多像素SSPD阵列。我们使用混合接口作为概念证明，演示了一个四像素SSPD阵列。测量结果表明，混合界面可以读取所有像素的错误率较低，计时抖动较低。
We propose a scalable readout interface for superconducting nanowire single-photon detector (SSPD) arrays, which we call the AQFP/RSFQ interface. This interface is composed of adiabatic quantum-flux-parametron (AQFP) and rapid single-flux-quantum (RSFQ) logic families. The AQFP part reads out the spatial information of an SSPD array via a single cable, and the RSFQ part reads out the temporal information via a single cable. The hybrid interface has high temporal resolution owing to low timing jitter in the operation of the RSFQ part. In addition, the hybrid interface achieves high circuit scalability because of low supply current in the operation of the AQFP part. Therefore, the hybrid interface is suitable for handling many-pixel SSPD arrays. We demonstrate a four-pixel SSPD array using the hybrid interface as proof of concept. The measurement results show that the hybrid interface can read out all of the pixels with a low error rate and low timing jitter.
