Fan, Yuanbin; Shi, Tingting; Ji, Weijie; Zhou, Lai; Ji, Yang; Yuan, Zhiliang Source: CLEO: Fundamental Science, CLEO:FS 2023, 2023, CLEO: Fundamental Science, CLEO:FS 2023;

Abstract:

We report a novel ultra-narrowband interference circuit (UNIC) for low noise photon counting of 1.25GHz gated InGaAs/InP avalanche photodiodes. We achieve record-low afterpulsing probability of 0.5% at a detection efficiency of 25.3%.

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