Method Apparatus and System for Preventing Hacking in Quantum Cryptography Communication

摘要

The present invention relates to a single photon detection apparatus and method, and more particularly, single photon detection capable of improving single photon detection performance by converting an output signal of a photon detector into a digital signal and detecting a single photon through digital signal processing It relates to an apparatus and method. In the present invention, a gate signal generator for generating a gate signal; a photon detector receiving the gate signal and generating an output signal while operating in a Geiger mode; an analog-to-digital converter converting the output signal of the photon detector to output a digital converted signal; and a digital signal processing unit that processes the digital conversion signal to determine whether a single photon is detected.