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Optical Communication Technology

Study on quantum secure communication

LI Ji-rong

Published Jan 1, 2009• 1 citation
OpenAlex

Abstract

The development history of quantum secure communication is reviewed from the aspects of theory research,experiment progress and technology development;The quantum communication process is expoud-ed;The related technologies to the quantum secure communication are introduced: quantum key,quantum au-thentication,quantum signatures,quantum encryption algorithm,quantum secret sharing;The several im-pedeing factors of the practical use of quantum secure communication are also analyzed,finally the develop-ment of quantum secure communication is prospected.

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The development history of quantum secure communication is reviewed from the aspects of theory research,experiment progress and technology development;The quantum communication process is expoud-ed;The related technologies to the quantum secure communication are introduced: quantum key,quantum au-thentication,quantum signatures,quantum encryption algorithm,quantum secret sharing;The several im-pedeing factors of the practical use of quantum secure communication are also analyzed,finally the develop-ment of quantum secure communication is prospected.
The basic theory and the working principle on quantum secret communication are introduced in this paper, the realization process of protocols of quantum key distribution are analyzed, the key technology of quantum secret communication is discussed. In the resent year, relative experiment and research progress on quantum secret communication are summarized at home and abroad. Finally, the application and development potential on quantum secret communication are presented. This new cryptographic communication is different from classical cryptographic communication; it absolutely has the advantage of the safety.
Quantum Communication technology, which achieved many unprecedented breakthroughs in the past several years,is arousing the attentions from related authoritative bodies and the field of communication research with its particular characteristic of perfect security in information transmission. Firstly, in this paper, the course of development and milestones of quantum communication theory and technologies are reviewed. And the state-of-the-art of domestic and foreign quantum communication technologies are summarized, with the conclusion that the technology tends to be mature, and China stands in the front row of the world both in quantum communication theory and experiments. Then, the definition and model of the ideal quantum communication system are discussed and engineering scenarios of quantum communication system based on optical fiber channel and free space optical channel are provided. The security and communication ability now achieved by these scenarios are analyzed, drawing such conclusion that quantum communication technologies has both high practical value and broad development space. Finally, realistic application scenarios and future application prospect of quantum communication technology are presented, in consideration of the requirements and current technology levels.
This paper first gives a brief introduction of quantum cryptography and several principal quantum effects involved by quantum key; then it describes in detail the development history of quantum cryptography at home, gives some topics in the research of quantum cryptography, including quantum key distribution, quantum signature, quantum identity authentication, quantum encryption, quantum secret-sharing, and their brief descriptions, and analyzes in depth some hindering factors in practical quantum cryptography; finally, the development of quantum cryptography is forecasted.
With the development of computer and communication technology, many people pay close attention to information security technology. Considering that the current encryption has many malpractices, some persons turn attention to quantum cryptography. Quantum Key Distribution is based on the principles of Heisenberg's uncertainty which guarantees that no eavesdropper can escape detection. According to this principle, this paper makes a study of the quantum cryptography technique, discusses the course of quantum key production and distribution in the quantum communication and the principle of quantum key distribution protocol in the communication by combining the application of quantum key protocol in the communication network. Current experimental progress on this aspect is introduced, existing problems are analyzed and some constructive suggestions are proposed. Finally, the developing trend for the theory of quantum password is prospected.
Recently, great progress has been achieved worldly in quantum secure communication system experiments and application study. Related research enters into a key period of practical realization, though the hot issue about its practicability is still on. Quantum secure communication, which has unique advantages in eavesdropping checking, identity authentication and keys online distributing, will lead a great revolution in the field of secure communication In this paper, we firstly introduce the statues, basic theory and characteristic of quantum Secure communication. Then, we study on the trends, prospect and countermeasures of quantum secure communication in deep.