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.
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.
Quantum communication as a vital branch of quantum information science, leverages physical properties such as quantum superposition, entanglement, and the impossibility of cloning to pioneer entirely new technical pathways for achieving unconditional secure communication. This paper comprehensively and meticulously elucidates the core technological principles of quantum communication, including quantum key distribution, quantum teleportation, and quantum secure direct communication; It also delves into its application status in critical domains such as dedicated communications, finance, and government affairs. Furthermore, it analyzes the numerous technical challenges currently faced, including the stability of quantum bits, limitations on communication distance, and difficulties in standardization. Finally, it offers a prospective outlook on its future development trends. Research indicates that quantum communication technology is progressively transitioning from the laboratory to large-scale application stages, with its integration into existing communication systems and strategic value in national security domains becoming increasingly prominent.
With the emergence of Quantum mechanics arrived the prospect of further development in technology. New areas of research and development came into the picture, one of them being Quantum communication. In 1991, the first protocol of Quantum cryptography and quantum non-duality attracted physicists, mathematicians, and computer scientists to explore the mysterious ways of the quantum world. Since then, quantum communication has evolved to an astonishing extent. Ultra-high-speed internet, computational power, optimization, and security have paved the way for innumerable possibilities ahead. This survey intends to investigate the concepts and applications of quantum communication. In this review article, we try to give an idea of quantum communication background by shedding light on polarization and entanglement, following which, we give a brief survey of its applications such as quantum teleportation, quantum key distribution, secure direct communication, and quantum memories. The study concludes with a discussion on the future outlook of this emerging paradigm.
Quantum entanglement stands as one of the most intriguing phenomena in quantum mechanics, defying classical intuition and paving the way for revolutionary advancements in information processing. the fundamentals of quantum entanglement and explores its applications in quantum information processing. Beginning with a concise overview of entanglement theory, we delve into various protocols and techniques that leverage entangled states to perform tasks such as quantum teleportation, superdense coding, and quantum cryptography. Furthermore, we discuss recent developments in the field, including entanglement-based quantum key distribution schemes and entanglement swapping protocols. Through a comprehensive examination of both theoretical principles and experimental implementations, this paper elucidates the pivotal role of quantum entanglement in shaping the landscape of quantum information processing, with implications for secure communication, computational speedup, and future quantum technologies.
This paper presents a comprehensive review of quantum communication using photons, based primarily on the foundational work of Krenn, Malik, Scheidl, Ursin, and Zeilinger. The review covers core quantum mechanical principles such as qubits, superposition, entanglement, and the no-cloning theorem, and explains how these principles underpin secure quantum communication. Key protocols including Quantum Key Distribution (QKD) and quantum teleportation are discussed. The paper further explores long-distance ground-based and space-based experiments, and examines the emerging role of high-dimensional quantum states using Orbital Angular Momentum (OAM) of photons. The aim is to provide a structured understanding of the current state and future potential of quantum communication technologies.
This paper is an overview of quantum communication and propose the future directions of quantum communication, Quantum communication is a far more efficient technology compared with classical communication greater information storage capacity, higher security provided by quantum key which based on basic quantum mechanics laws and faster transmission speed without the limitation of distance. It is a mainstream of future communication developing direction. This paper depicts the basic architecture of quantum communication from different perspectives such as quantum internet, quantum key distribution and integration of quantum communication with other frontier technology. This gives a brief picture of current development of quantum communication. By integrating previous research, this paper demonstrated several existing challenges in decoherence, scalability of quantum network and verification and certification of information. Then this paper analysis the feasibility of solutions to those problems. Finaly, list the opportunities of quantum communication and its benefits, giving directions of future development like integrate photonic technology and free space quantum communication.