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作 者:Mingyu Wang Zhengyong Li Yanhui Cai Yi Zhang Xiangkong Zhan Haiyang Wang Chongqing Wu 王明宇;李政勇;蔡艳辉;张伊;詹翔空;王海洋;吴重庆(Key Lab of Education Ministry on Luminescence and Optical Information Technology,Beijing Jiaotong University;The Institute of Optics,University of Rochester)
机构地区:[1]Key Lab of Education Ministry on Luminescence and Optical Information Technology, Beijing Jiaotong University, Beijing 100044, China [2]The Institute of Optics, University of Rochester, 275 Hutchison Road, Rochester, New York 14627, USA
出 处:《Chinese Optics Letters》2017年第10期7-10,共4页中国光学快报(英文版)
基 金:supported by the National Natural Science Foundation of China(Nos.11574026 and 11274037);the Program for New Century Excellent Talents in University,MOE of China(No.NCET-12-0765);the Foundation for the Author of National Excellent Doctoral Dissertation,China(No.201236)
摘 要:We demonstrate an ultralow-noise single-photon detection system based on a sensitive photomultiplier tube(PMT) with precise temperature control, which can capture fast single photons with intervals around 10 ns.By improvement of the electromagnetic shielding and introduction of the self-differencing method, the dark counts(DCs) are cut down to ~1%. We further develop an ultra-stable PMT cooling subsystem and observe that the DC goes down by a factor of 3.9 each time the temperature drops 10°C. At -20°C it is reduced 400 times with respect to the room temperature(25°C), that is, it becomes only 2 counts per second, which is on par with the superconducting nanowire detectors. Meanwhile, despite a 50% loss, the detection efficiency is still 13%. Our detector is available for ultra-precise single-photon detection in environments with strong electromagnetic disturbances.We demonstrate an ultralow-noise single-photon detection system based on a sensitive photomultiplier tube(PMT) with precise temperature control, which can capture fast single photons with intervals around 10 ns.By improvement of the electromagnetic shielding and introduction of the self-differencing method, the dark counts(DCs) are cut down to ~1%. We further develop an ultra-stable PMT cooling subsystem and observe that the DC goes down by a factor of 3.9 each time the temperature drops 10°C. At -20°C it is reduced 400 times with respect to the room temperature(25°C), that is, it becomes only 2 counts per second, which is on par with the superconducting nanowire detectors. Meanwhile, despite a 50% loss, the detection efficiency is still 13%. Our detector is available for ultra-precise single-photon detection in environments with strong electromagnetic disturbances.
关 键 词:PMT Ultralow-noise single-photon detection based on precise temperature controlled photomultiplier with enhanced electromagnetic shielding
分 类 号:TN152[电子电信—物理电子学]
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