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Chinese Science Bulletin

Recent development in quantum communication

Song Si

Published Jan 1, 2012• 0 citations
OpenAlex

Abstract

In this review article,we will review the recent process of quantum communications.In the past decades,there are many developments in quantum communication,for instance,quantum key distribution,quantum teleportation,quantum secure direct communication,deterministic secure quantum communication,quantum secret sharing and so on.And we focus our attention on the recent developments in quantum communication protocols.

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In this review article,we will review the recent process of quantum communications.In the past decades,there are many developments in quantum communication,for instance,quantum key distribution,quantum teleportation,quantum secure direct communication,deterministic secure quantum communication,quantum secret sharing and so on.And we focus our attention on the recent developments in quantum communication protocols.
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 Cryptography is a novel approach to make the information and network world more secure. Unlike classical cryptography, quantum cryptography ensures the security of communication because it is based on the laws of Quantum Mechanics; a branch of physics that deals with the fundamental behavior of matter and their energies to the levels of subatomic particles. These particles and their intrinsic properties such as photon polarization and entanglement allow us to develop an unbreakable system of cryptographic information. Conventionally, the security has been primarily concerned with the secured distribution of secret key carried over an insecure channel. However, in Quantum Cryptographic systems the transmission of secret key is done using aforementioned laws of nature through a secured quantum channel highly susceptible to intrusion detection. Consequently, the Quantum Key Distribution (QKD), in conjunction with protocols such as BB84 protocol has emerged as an ultimate modern secured communication system. This article concentrates on briefly reviewing quantum cryptography, some recent developments and reports of its vulnerabilities.
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.
Teleportation is a new and exciting field of future communication. Security in data communication is a major headache now a day. Among the encryption technologies that are available at present, shared key is the most reliable which depends on secure key generation and distribution. Teleportation/entanglement is a perfect solution in this regard as for the no cloning theorem of quantum mechanics any attempt to intercept the key by the eavesdropper will be detectable immediately. To use the quantum key distribution efficiently and effectively, rigorous study and research on teleportation/entanglement is needed. We have reviewed and presented teleportation concept, its process, road blocks, and successes that are achieved recently in a straightforward manner.
This thesis is focused on the design and analysis of quantum communication protocols. Several schemes for quantum communication have been introduced in the recent past. For example, quantum teleportation, dense coding, quantum key distribution, quantum secure direct communication, etc., have been rigorously studied in the last 2-3 decades. Specifically, a specific attention of the present thesis is to study the quantum teleportation schemes with entangled orthogonal and nonorthogonal states and their experimental realization, but not limited to it. We have also studied some aspects of quantum cryptography.
This paper focuses on the concepts used in Quantum Cryptography and recent progress made. We look at the different categories of key distribution protocols that have been proposed and issues related to those. We then take an overview of two main approaches of communication using quantum cryptography concepts, i.e., ``Quantum Secure Direct Communication'' and ``Deterministic Secure Quantum Communication'', and limitations related to the usage of these schemes in a real-world system. At last, we list down the problems identified in the research and conclude our discussion by proposing areas of focus for future research.