Quantum Communication

Quantum communication is well known to be one of the most advanced quantum technologies, relying on the methods of quantum optics and quantum information theory. It aims at conceptually new solutions for information transfer, encoding, retrieval, processing, or security using essentially nonclassical properties of quantum states. During the past decade, quantum communication has flourished due to drastic theoretical and experimental progress and approached full-scale and even the first industrial implementations. Despite the advancements, the dynamic field of quantum communication demands new developments toward higher efficiency, robustness, scalability, and usability. Problems such as increase in communication distances using quantum repeaters or extra-terrestrial channels, higher communication rates employing multiplexing or enhanced state engineering and detection, device-independent quantum security immune to quantum hacking, networked applications by means of effective multipartite entanglement, and transition beyond the optical wavelengths are some of the topics at the very frontier of research in the field, in addition to the fundamental studies of properties of quantum states and their relation to the efficiency of quantum communication. The aim of this Special Issue is therefore to further stimulate progress in the field and to collect articles and short reviews contributing to the development of quantum communication using discrete- and continuous-variable as well as advanced hybrid approaches. We welcome submissions on theoretical or experimental advancements in topics including but not limited to quantum-enhanced communication, entanglement distribution and swapping, quantum teleportation and cloning, quantum networking, quantum key distribution and hacking, sources and detectors for quantum communication, multi-partite quantum communication, covert quantum communication, quantum repeaters and quantum memories, full- and measurement-device-independent quantum communication, quantum channel capacities, quantum channel estimation and discrimination, quantum error correction, quantum illumination and imaging, optical and microwave quantum communication, satellite and deep-space quantum communication, and atmospheric and fiber-based quantum communication.

Dr. Vladyslav Usenko
Dr. Stefano Olivares
Dr. Marcin Jarzyna
Guest Editors

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