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.
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.
In this paper, the definition and connotation of quantum communication technology are briefly analyzed, and the ideal model of quantum communication is briefly summarized.Secondly, the characteristics and advantages of quantum communication technology are briefly analyzed based on the progress process of quantum information and the existing technological degree and development space of quantum information technology.Finally, the development direction and application prospect of quantum information technology are analyzed, and the future development of quantum communication is analyzed.
Abstract Quantum secure direct communication is a quantum communication technology that uses quantum states as carriers to transmit information securely and directly, first proposed by a team at Tsinghua University in 2000. Quantum communication broadly refers to information transfer processing tasks accomplished through the transmission of quantum states, which can be categorized into three types based on the content transmitted: quantum key distribution for transmitting random numbers, quantum secure direct communication for transmitting classical information, and quantum teleportation for transmitting quantum information. After more than two decades of development, quantum secure direct communication has matured and entered practical application: a theoretical framework tailored for scenarios with high loss, high noise, and stringent security requirements has been established; experimental demonstrations of quantum direct communication in optical fibers and free space have been completed; three milestone systems for quantum secure direct communication at the metropolitan, intercity, and network levels have been built; and successful trials have been conducted in various scenarios such as 5G private networks and banking applications. Quantum secure direct communication offers multiple applications: it prevents information leakage by detecting eavesdropping, ensuring information security; identifies exposed locations by monitoring surveillance activities, providing technical support for preventing targeted eliminations and safeguarding commanders' personal safety; and detects intrusion and tampering behaviors, offering novel protection for cybersecurity. Currently, quantum direct communication has been incorporated into relevant planning documents in China, the European Union, and the United States, and is undergoing rapid development. This article briefly outlines the historical development, fundamental principles, research advancements, and future prospects of quantum direct communication.
Abstract Quantum communication has made great breakthroughs in recent years. Because of its characteristics for strict information security transmission and high speed, it has received attention from related research fields around the world. This paper briefly reviews the progress in the field of quantum computing and communication. The basic functions of quantum mechanics related to the quantum communication are first introduced, including qubit, logic gates, postulates, polarization and quantum entanglement. Then the applications of quantum communication are discussed including teleportation, cryptography and quantum networks. Finally, advantages and disadvantages for the current applications are analyzed and the challenges remained in the current research are demonstrated.
Quantum cryptography communication technology is based on information security and it can achieve unconditional security, having been applied in many fields. Therefore, the author carries out study of the applications of the quantum cryptography communication technology. The author firstly outlines the principle of the technology, analyzes the network architecture of the technology and discusses the implementation of Quantum Key Distribution (QKD). Secondly, the author expounds the existing application scenarios and application methods, and finally prospects the future research development and the problems in engineering applications to be solved.
With the recent advancements and developments in quantum technologies, the emerging field of quantum communication and networking has gained the attention of the researchers. Owing to the unique properties of quantum mechanics, viz., quantum superposition and entanglement, this new area of quantum communication has shown potential to replace modernday communication technologies. The enhanced security and high information sharing ability using principles of quantum mechanics has encouraged networking engineers and physicists to develop this technology for next generation wireless systems. However, a conceptual bridge between the fundamentals of quantum mechanics, photonics and the deployability of a quantum communication infrastructure is not well founded in the current literature. This paper aims to fill this gap by merging the theoretical concepts from quantum physics to the engineering and computing perspectives of quantum technology. This paper builds the fundamental concepts required for understanding quantum communication, reviews the key concepts and demonstrates how these concepts can be leveraged for accomplishing successful communication. The paper delves into implementation advancements for executing quantum communication protocols, explaining how hardware implementation enables the achievement of all basic quantum computing operations. Finally, the paper provides a comprehensive and critical review of the state-of-the-art advancements in the field of quantum communication and quantum internet; and points out the recent trends, challenges and open problems for the real-world realization of next generation networking systems.
Humanity’s social, economic, and technological progress could not have been made without communications infrastructure. The need to attain the sophistication of long-distance communication has grown steadily since the dawn of civilization. The modern global communications system is the single greatest infrastructural project in human history. The global telecommunications grid which uses satellites, deep-sea fiber-optic systems, Wi-Fi, Bluetooth, microwave and other radio, and optical-frequency communications networks are tremendous in coverage, unparalleled in connection, and ubiquitous in application. As we approach the middle of the 21st century, this system’s next major update will incorporate quantum communications technology. Quantum communication, in tandem with quantum computing and quantum sensing, constitutes one of the three pillars of second-generation quantum technology and promises an array of novel applications. Considering the reliable transmission of quantum information often requires the transport of individual particles of light photons through a world inundated by trillions upon trillions of photons, quantum communication systems are an engineering marvel. To provide a technological alternative for existing public-key encryption protocols, which are now susceptible to the threat posed by future quantum computing systems, nascent commercial quantum communication networks aim to realize the potential for cryptographic security provided by the laws of quantum mechanics. However, a number of obstacles must be overcome before quantum communications can be widely adopted. This study focuses on the current state of quantum communication, the promise of its prospects in the near and far future, the obstacles it faces, and the breakthroughs and applications developed by the United Arab Emirates.