Such a photon counter is essential if quantum cryptography is to work, because it will allow what are known as quantum Repeaters to be built.

如果量子密码开始工作，这样的光子计数器是必不可少的，因为这样一来将可以使用量子中继器。

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This paper introduces thought and process which are wide-band amplifier design in photon counter system. The detail circuit is given.

本文介绍光子计数系统中宽带放大电路的设计思想和设计过程，给出了具体设计电路。

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So it's a nice solution that a photon counter can be calibrated conveniently by the LED weak standard light source.

使用发光二极管制成标准光源来进行校验和标定光子计数器是一种较好的解决方法。

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Such a photon counter is essential if quantum cryptography is to work, because it will allow what are known as quantum repeaters to be built.

ECONOMIST: Quantum information technology