集成有SFQ电路的多元件SSPD阵列在0.1 W GM制冷机中的无串扰运行
Crosstalk-free operation of multi-element SSPD array integrated with SFQ circuit in a 0.1 Watt GM cryocooler
摘要：
我们展示了一个多元素超导纳米线单光子探测器（SSPD）阵列集成在一个紧凑的0.1 W吉福德-麦克马洪制冷机的单通量量子（SFQ）读出电路的成功操作。时间分辨读出技术，其中每个元件的输出信号以有限的时间间隔进入SFQ读出电路，揭示了与SFQ读出电路连接的四元件SSPD阵列的无串扰操作。定时抖动和系统检测效率分别为50 ps和11.4%，这是实际的单像素SSPD系统的性能相媲美。
英文摘要：
We demonstrate the successful operation of a multi-element superconducting nanowire single-photon detector (SSPD) array integrated with a single-flux-quantum (SFQ) readout circuit in a compact 0.1 W Gifford-McMahon cryocooler. A time-resolved readout technique, where output signals from each element enter the SFQ readout circuit with finite time intervals, revealed crosstalk-free operation of the four-element SSPD array connected with the SFQ readout circuit. The timing jitter and the system detection efficiency were measured to be 50 ps and 11.4%, respectively, which were comparable to the performance of practical single-pixel SSPD systems.
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