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Journal of Harbin University of Commerce

Basic protocol of quantum communication

Yu Yang

Published Jan 1, 2003• 0 citations
OpenAlex

Abstract

The quantum communication is one of the most important technologies, which is the combination of quantum mechanics and cryptography.Introduced the principle and method of quantum communication and three protocol distribute. Instruct some problem of to develop quantum communication.

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The paper overviews the fundamental principles, methods, technologies and applications of quantum communication. It introduces the basic protocol of secure quantum private communication, including the decoy method, quantum communication based on the entanglement distribution, quantum teleportation, manipulation of entangled photonspairs in polarization space. This review introduces recent status in quantum technology and applications, and attempts to discuss future directions in which the field is likely to develop.
The paper overviews the fundamental principles, methods, technologies and applications of quantum communication. It introduces the basic protocol of secure quantum private communication, including the decoy method, quantum communication based on the entanglement distribution, quantum teleportation, manipulation of entangled photonspairs in polarization space. This review introduces recent status in quantum technology and applications, and attempts to discuss future directions in which the field is likely to develop.
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.
Quantum cryptography is a field of study that explores the use of quantum mechanics to create new cryptographic techniques that are more secure than traditional cryptography. With the advancement of quantum computing technology, the security of many commonly used encryption algorithms is at risk. Quantum cryptography offers a potential solution to this problem by providing a method for secure communication based on the principles of quantum mechanics. In this paper, we will provide an overview of the fundamental concepts of quantum mechanics, their relevance to cryptography, and the most widely used quantum cryptography protocol, Quantum Key Distribution. The paper also examines the security and limitations of Quantum Key Distribution. The paper concludes with a summary of findings and implications for the future of cryptography and information security.
Cryptography is used for the secure communication in which two parties are involved. The most popular cryptographic issue is the transmission of confidential messages. The privacy is maintained using the cryptographic protocol. The security of quantum cryptography relies more on physics including quantum mechanics and statistics rather than on solving mathematical problems. A well-known application of quantum cryptography is quantum key distribution (QKD) that is used to establish communication by generating cryptographic keys. Moreover, it is based on the Heisenberg uncertainty principle that ensures the security and prevents from eavesdropping. Basically, quantum cryptography with faint laser pulses, polarization coding, phase coding, and frequency coding have been discussed.
The development of modern computer technologies endangers the confidentiality of information, which is usually ensured by traditional cryptographic means. This circumstance forces us to look for new methods of protection. In view of modern trends, quantum cryptography methods can become such alternatives, which allow solving a number of important cryptographic problems, for which the impossibility of solving using only classical (that is, non-quantum) communication has been proven. Quantum cryptography is a branch of quantum informatics that studies methods of protecting information by using quantum carriers. The possibility of such protection is ensured by the fundamental laws of quantum mechanics. One of the promising directions of quantum cryptography is Quantum Secure Direct Communication (QSDC) that offers secure communication without any shared key. A characteristic feature of this method is the absence of cryptographic transformations, accordingly, there is no key distribution problem. The purpose of this work is a general overview of quantum cryptography protocols, finding their weak points for further development and improvement, as well as identifying vulnerabilities to different attacks. The article analyzes new methods and protocols, as well as presents their advantages and disadvantages. Based on partial generalizations of theoretical provisions and practical achievements in the field of quantum cryptography, a generalized classification was developed. By comparing various factors of the protocols, and their resistance to certain cyberattacks, we have the opportunity to identify several problems in this field and expand the possibilities for choosing appropriate methods for building modern quantum information protection systems. In accordance with this, conclusions were presented regarding the use of protocols and increasing the level of their effectiveness.