从理论和实验上介绍了一种基于相关光子的多模式空间纠缠特性新型定标方法，实现了光电倍增管的量子效率绝对定标。该方法利用355 nm 连续紫外激光器抽运BBO 非线性晶体，不仅制备了一对710 nm/710 nm 的简并相关光子和一对700 nm/720 nm 的非简并相关光子，并且定标了光电倍增管的量子效率。同时介绍了实验原理和定标装置，并且对定标结果进行了不确定度分析。结果表明，利用相关光子的多模式相关性光辐射定标方法的相对合成不确定度小于4.7%。基于相关光子多模式空间相关性获得光电倍增管的量子效率，修正后并与出厂检测结果进行了比对，信号光通道的相对差异分别为10.3%、10.2%，空闲光通道的相对差异分别为12.9%、8.95%。初步验证不依赖时间符合测量的方法，只需对两路的光子计数进行统计，即可实现探测器量子效率的绝对定标。

A new calibration method of detectors based on the multimode spatial correlation of entangle photons which is generated from parametric-down-conversion is proposed and demonstrated experimentally. BBO nonlinear crystal is pumped by a continuous work ultraviolet 355 nm to generate entangle photons with wavelengths of 710 nm/710 nm at signal channel and 700 nm/720 nm at idle channel. The quantum efficiency is calibrated by taking the multimode correction method. The theory and calibration scheme of this novel method is presented and the system uncertainty is detailed analyzed. It is proved that the combined uncertainty of this new method is less than 4.7%. The approach presented is compared with the calibration result provided by the manufacturer, the relative difference is 10.3%, 10.2% at signal channel 12.9%, 8.95% at idle channel. The quantum efficiency of detector that doesn’t depend on time correlation measurement can be obtained by means of two branches of photons number statistics. The calibration results indicate its validity and rationality.