Abstract: With the rapid development of quantum information technology,single photon detectors,as core devices in fields such as quantum secure communication,have been one of the research hotspots.In recent years,the performance of single photon detectors has greatly improved with the development of various new technologies.At the same time,the research on testing and calibration techniques of single photon detectors has also received attention,especially the new calibration technology based on quantum physical effects,which have received attention from various metrological institutions.A brief introduction is given to the working mechanism of single photon detectors and the research progress of calibration technology of single photon detectors at home and abroad.The current status of detection efficiency calibration based on standard detectors and correlated photon pairs,as well as calibration technology for after-pulse probability and time jitter,is summarized.This can provide reference for researchers in related fields and put forward prospects for the future development of technology.

Key words: Single photon detector, Calibration, Quantum metrology