本文提出了一种构建快速单光子探测器的新方法。
A new idea is put up to design a quick single-photon detector.
分析了在红外通信波段对量子密钥分配的关键器件单光子探测器进行精密温度控制的必要性。
Analysis indicates the importance of precise temperature control of single-photon detector used for quantum key distribution in infrared communication wavelengths.
由于单光子探测器响应速率的限制，目前的量子密钥分配系统的码率很低，限制了它的实际应用。
Due to the limit of response speed of the present single-photon detector, the code rate is still too low to come into practical use for the present quantum key distribution (QKD) system.
将单光子探测器的研制分为偏置电压、前置放大、雪崩信号提取、温度控制和数字控制电路五个模块。
The SPD R&D includes five modules: SPD bias voltage, pre-amplification, avalanche signal extraction, temperature control and digital control circuit.
首先，在研究BB 84协议各种具体实现方法的基础上，提出了一种基于偏振编码的量子密钥分发方案，该方案仅使用一台单光子探测器。
Firstly, based on the analysis of some implementations of BB84 protocol, we developed a scheme of quantum key distribution by using polarization encoding and only one single photon detector.
本文着重介绍了半导体雪崩光电二极管(APD)的研究现状和应用，以及一种新型的单光子探测器—真空雪崩光电二极管(VAPD)的结构，原理和特性。
A overview of the basic structure, operating principle and properties for a new single-photon photo-detector, called vacuum avalanche photodiode (VAPD), is presented too.
如果在探测器被拿走的情况下，我们还是一颗颗地放射单光子，可是却看不出它们是从哪条缝穿过去的。
If we then take the detectors away we are still firing individual photons one at a time but we no longer know which slit they are going through.
如果在探测器被拿走的情况下，我们还是一颗颗地放射单光子，可是却看不出它们是从哪条缝穿过去的。
If we then take the detectors away we are still firing individual photons one at a time but we no longer know which slit they are going through.
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