Detection efficiency characteristics of free-running InGaAs/InP single photon detector using passive quenching active reset IC

Zheng Fu^{1, 2}, Wang Chao^{1, 3}, Sun Zhi-Bin¹, Zhai Guang-Jie^{1, †,}

(a) Schematic of the passive quenching active reset IC. (b) Photomicrograph of the single cell of the circuit.