The Optical Detection Of Quantum Cryptography And Random Code Generated

Quantum communication is a rising interdisciplinary field which combines classical communication and quantum mechanics . Quantum key distribution protocol makes use of single photon of quanta-randomicity to achieve unconditioned security key distribution, especially which is the realism significance of research way in quantum information at present. In this paper, we general discuss that the problem of information security is analyzed in QKD. Meanwhile we introduce at large the key to cell technology in the experimental QKD. Main contents of this paper are as follows:1, Designed practical QKD system, meanwhile we introduce at large the key to cell technology in the experimental QKD, through a deal of experiments, which proved to a reasonable system and acquired to some valuable experimental data.2, Studying the character of the output of the laser used on the practical QKD system, and design and made a photo-electronic detection circuit to accomplish the necessary photo ?electronic conversion for the practical QKD system.3, Designed two balance true random codes generators for QKD system, they are based on physical random source. And analyzed randomicity of the generators.