The photo-detector must satisfy the follow basic conditions:1 The quantum efficiency of photo-detector should be high enough to reduce the influence of quantum noise;
实验中，光电探测器的选取要满足以下基本条件：1、光电探测器的量子效率要足够高，从而在探测过程中减小对量子噪声的破坏；
The photo-detector must satisfy the follow basic conditions:1 The quantum efficiency of photo-detector should be high enough to reduce the influence of quantum noise;
实验中，光电探测器的选取要满足以下基本条件：1、光电探测器的量子效率要足够高，从而在探测过程中减小对量子噪声的破坏；
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