Zhou Fei, Chen Qi, Liu Hao, Dai Yue, Wei Chen, Yuan Hang, Wang Hao, Tu Xue-Cou, Kang Lin, Jia Xiao-Qing, Zhao Qing-Yuan, Chen Jian, Zhang La-Bao, Wu Pei-Heng. Noise characteristics analysis and suppression of optical system based on infrared superconducting single-photon detectorJ. Acta Physica Sinica, 2024, 73(6): 068501. DOI: 10.7498/aps.73.20231526