Superconducting single photon detectors integrated with single flux quantum readout circuits in a cryocooler
Superconducting single photon detectors integrated with single flux quantum readout circuits in a cryocooler
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DOI：
10.1063/1.3640503
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发表时间：
2011-09
影响因子：
4
通讯作者：
S. Miki;H. Terai;T. Yamashita;K. Makise;M. Fujiwara;M. Sasaki;Zhen Wang
中科院分区：
文献类型：
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作者：
S. Miki;H. Terai;T. Yamashita;K. Makise;M. Fujiwara;M. Sasaki;Zhen Wang
我们报告了具有基于单通量量子（SFQ）电路的集成读出电子器件的超导单光子探测器（SSPD）的运行情况。将 SSPD 连接到低温冷却器系统中不带偏置 T 形接头的 SFQ 读出电路，并测量检测效率 (DE) 以验证其正确运行。 DE 曲线与传统读出电子设备测量的曲线非常匹配，并且正常操作的最大偏置电流有所增加。此外，我们还确认 SFQ 电路正确合并了来自两个 SSPD 的输入信号。具有 SFQ 读出电路的 SSPD 表现出 50 ps 的良好时序抖动。
We report the operation of superconducting single photon detectors (SSPDs) with integrated readout electronics based on a single-flux-quantum (SFQ) circuit. The SSPDs were connected to a SFQ readout circuit without bias tee in a cryocooler system, and detection efficiencies (DEs) were measured to verify their correct operation. The DE curves matched well with those measured by conventional readout electronics, and the maximum bias current for normal operation was increased. In addition, we confirmed that the SFQ circuit correctly merged the input signals from two SSPDs. SSPDs with a SFQ readout circuit demonstrated a favorable timing jitter of 50 ps.