Ultra-narrowband interference circuits for 1.25 GHz gated single-photon InGaAs/InP avalanche photodiodes

Yuanbin Fan,Tingting Shi, Weijie Ji,Lai Zhou,Yang Ji,Zhiliang Yuan

2023 Conference on Lasers and Electro-Optics (CLEO)（2023）

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摘要

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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