Near-infrared single photon detection is one of the key problems of realizing the quantum security communication.
其中近红外单光子探测技术是实现量子保密通信的关键问题之一。
We report here briefly the principle and the device of our single-molecule detection spectrometer based on two-photon excited fluorescence.
介绍采用双光子激发荧光方法进行单分子探测的原理和自行研制的实验装置，激发光聚焦和荧光收集采用共焦方式。
The single-photon prompt detection can come true for high repetition-rate pulses. The applying of this detector will largely raise the code rate of the QKD, and boost the commercial use.
利用它可实现快速的单光子探测，提高量子密钥分配系统的码率，促进量子密钥分配系统的实际应用。
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