Along with the development of quantum correspondence,the security problem has aroused people's enormous attention.The article analyzes the significance of quantum correspondence security,and induces the domestic and foreign research about it according to the key distribution, the quantum encryption and the quantum authenticated.Finally,based on the quantum correspondence security,the paper points out the next domain research direction.
Along with the development of quantum correspondence,the security problem has aroused people's enormous attention.The article analyzes the significance of quantum correspondence security,and induces the domestic and foreign research about it according to the key distribution, the quantum encryption and the quantum authenticated.Finally,based on the quantum correspondence security,the paper points out the next domain research direction.
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 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.
From the perspective of guaranteeing content security,a quantum key can enable secret communication with unconditional security.It can extremely improve the security of programs when applied to cryptographic applications.Considering that currently quantum key is seldom used in practice,this paper introduces the encryption methods of quantum keys and traditional keys for content security,and analyzes their characteristics in comparison,leading to a conclusion that the quantum key has more advantages than the traditional key.On this basis,this paper further introduces research on Quantum Key Distribution(QKD) network,and analyzes the characteristics of quantum key resources,as well as existing application scenarios and application methods.Finally,this paper discusses directions of future research,and gives reasonable suggestions for application of quantum key in communication protocols,software,hardware devices,and update of existing key resources.
The emergence of quantum computing poses significant risks to conventional network security, prompting researchers to focus on developments in quantum cryptography, particularly Quantum Key Distribution (QKD).According to research, it has been found that traditional security methods, like RSA encryption, could potentially be at risk from quantum algorithms.On the other hand, quantum cryptography is a field of study that leverages the principles of quantum mechanics to improve the security of communication.One of the techniques used in quantum cryptography is Quantum Key Distribution (QKD), which makes use of the unique properties of quantum particles such as photons to securely distribute encryption keys and detect any potential eavesdropping attempts, thanks to the uncertainty principle.Nevertheless, the integration of QKD into current network infrastructures poses significant challenges due to the required technological advancements.This study offers a comprehensive analysis of the fundamental principles underlying quantum cryptography, the obstacles that arise during its implementation, and its potential prospects for protecting against the risks posed by advancements in quantum computing.Furthermore, this study delves into the potential consequences of these technological advancements across different industries and emphasizes the need to create algorithms that can withstand quantum attacks to guarantee strong data security in the age of digitalization.
As the established communication networks no longer meet people’s need in the speed and the security in transferring information, quantum communication draws people’s attention. Taking advantage of the basic quantum properties, quantum communication guarantees the message being delivered promptly and safely. This paper first introduces a general background quantum communication. After that, we introduced the history of the development of quantum communication and Quantum Key Distribution (QKD) as well as the general flow of quantum communication. Based on that, we evaluated a scheme of quantum communication network based on QKD, proposing different methods to improve the security and efficiency of the transmission of information. We encapsulated the history of the development of QKD. We conclude that the improvement of quantum communication depends on the algorithms. While various algorithms are proposed, we discussed a potentially possible way to combine the advantages of the algorithms. However, the actual effectiveness of our method still needs to be testified in future researches.
The rapid development of quantum information has brought new opportunities and challenges to modern information technologies.As one of the popular research directions in the field of quantum information, quantum networks aim to utilize the fundamental properties of quantum mechanics to achieve long-distance (secure) communications or provide computational capabilities superior to classical computing networks through distributed computing.The study of quantum networks holds great significance in advancing the practicality of quantum information.To gain a comprehensive understanding of the development trajectory of quantum networks, this study categorizes quantum networks into three types: quantum cryptography, quantum cloud computing, and quantum teleportation networks, based on different application scenarios and technical approaches.It provides comprehensive reviews of both domestic and international research progress and the challenges faced in each aspect.Furthermore, in conjunction with the practical implementation of quantum networks, the key technologies that need to be overcome in the development of quantum network systems, involving link establishment, information transmission, networking protocols, and physical hardware, are summarized.Overall, the development of quantum networks is still in the primary stage.At this stage, actively addressing challenges and seizing opportunities are of great significance to enhance the technological prowess of China.Therefore, to promote the development of 收稿日期：2023-10-11；修回日期：2023-10-30 通讯作者： * 高飞，网络与交换技术国家重点实验室(北京邮电大学)教授，研究方向为量子密码和量子算法；E-mail: