标题： 实现适用于单光子雪崩探测器多种架构的稳健可重构主动淬灭设计 显示英文标题

标题： Realizing a robust, reconfigurable active quenching design for multiple architectures of single-photon avalanche detectors

摘要： 大多数用于单光子雪崩探测器的主动淬灭电路要么是使用离散元件设计的，这些元件缺乏动态改变控制参数的灵活性，要么是使用定制ASIC的，这需要较长的开发时间和较高的成本。 作为替代方案，我们提出了一种可重新配置且稳健的混合设计，该设计使用了片上系统（SoC），集成了FPGA和微控制器。 我们利用FPGA的速度和配置能力，在大范围内动态改变淬灭和复位参数，从而使我们的电路能够在不重新设计系统的情况下与各种APD一起工作。 微控制器使远程调整控制参数和现场重新校准APD成为可能。 坚固的设计使用了具有航天遗产的组件，因此使其适用于电信和量子密钥分发（QKD）领域的空间应用。 我们通过将商用APD冷却到253K来表征我们的电路，并在保持后脉冲概率接近3%的情况下获得了35ns的死时间。 我们还通过直接测试定制制造的芯片级APD展示了电路的多功能性，这为自动化晶圆级测试和表征铺平了道路。 显示英文摘要

摘要： Most active quench circuits used for single-photon avalanche detectors are designed either with discrete components which lack the flexibility of dynamically changing the control parameters, or with custom ASICs which require a long development time and high cost. As an alternative, we present a reconfigurable and robust hybrid design implemented using a System-on-Chip (SoC), which integrates both an FPGA and a microcontroller. We take advantage of the FPGA's speed and configuration capabilities to vary the quench and reset parameters dynamically over a large range, thus allowing our circuit to operate with a wide variety of APDs without having to re-design the system. The microcontroller enables the remote adjustment of control parameters and re-calibration of APDs in the field. The ruggedized design uses components with space heritage, thus making it suitable for space-based applications in the fields of telecommunications and quantum key distribution (QKD). We characterize our circuit with a commercial APD cooled to 253K, and obtain a deadtime of 35ns while maintaining the after-pulsing probability at close to 3%. We also demonstrate versatility of the circuit by directly testing custom fabricated chip-scale APDs, which paves the way for automated wafer-scale testing and characterization.