Miyajima Shigeyuki, Yabuno Masahiro, Miki Shigehito, Yamashita Taro, Terai Hirotaka
Opt Express. 2018 Oct 29;26(22):29045-29054. doi: 10.1364/OE.26.029045.
We propose and demonstrate a 64-channel event-driven encoder based on single-flux quantum (SFQ) circuits for application to a multi-pixel superconducting nanowire single-photon detector (SSPD) system. Multi-pixel SSPD systems were developed to improve maximum count rates and realize ultra-sensitive imaging systems. An intelligent signal processor is required, which we designed based on SFQ circuits. We were able to obtain an address based on the reserve timing information for the photon detection that occurs in the SSPD, as well as read the time-tagged address information for the SSPDs through the SFQ encoder. The overall observed FWHM jitter was 56.5 ps.
我们提出并演示了一种基于单磁通量子（SFQ）电路的64通道事件驱动编码器，用于多像素超导纳米线单光子探测器（SSPD）系统。多像素SSPD系统的开发是为了提高最大计数率并实现超灵敏成像系统。需要一个智能信号处理器，我们基于SFQ电路进行了设计。我们能够根据SSPD中发生的光子检测的保留定时信息获得一个地址，并通过SFQ编码器读取SSPD的带时间标记的地址信息。整体观察到的半高宽抖动为56.5皮秒。
