Research On Quantum Communication Control System

In the past few decades,Classical communication has made relatively great progress from analog communications to digital communications,digital communications age from 2G GSM and CDMA toward the now in full swing 4G TD-CDMA 3G technologies.The communication speed is faster and the communication quality has been steadily improved.However,recent information leak incidents that frequently hit the newspapers is enough to show the security of communications problems at this stage which is still a very serious issue.Present means based encryption algorithm complexity is not able to meet long-term demand for encryption.At this time,quantum secure communication based on the absolute security features physical theory came into being in the era.Quantum Secure Communication which is based on quantum theory and communications engineering disciplines interdisciplinary physics is to be rise in recent years.It also provides a new research direction for information security.In this paper,I introduce the two and a half's work in the laboratory of Beijing University of Posts and quantum communication of key technology of quantum communication and quantum communication experiments.The content focuses on modulation techniques and quantum secure communication protocol of quantum communication.The first two chapters at the beginning introduces the basics of physics and quantum theory main conclusions related to the field of quantum communication,quantum communication while important stage of development and communication protocols,communication technology made elaboration.The third part of the article analyzes the InGaAs/InP single photon detector dark count characteristics.As noise of single photon detector,we explores the characteristics of dark count's internal rules.Understanding the characteristics of the dark count on experimental control has a certain significance.This chapter explores the autocorrelation and cross correlation features of dark count by experiment.Thus,it played inspired meaning in exploring the source of random numbers.The fourth part introduces my work in quantum communication laboratory on the quantum communication control technology research.We focus on designing a hybridity of random number generator.This feature can use the random number which is not very high efficiency of the existing possible source of random numbers,through a variety of programs and mergers hybridity more efficient way to generate a random number generator.Experimental system,rigorous qualitative and quantitative aspects,to verify the performance of the random number generator,robustness and efficiency.This random number generator can be effectively utilized to laboratory quantum communication schemes and secure communications among other.