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NATO ASI series. Series B : Physics

Wideband Quantum Communication: A New Frontier?

P. D. Drummond, Carlton M. Caves

Published Jan 1, 1992• 3 citations
Publisher
DOI
10.1007/978-1-4615-3386-3_23

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With the overall redefinition of the international system of units (SI), the classical physical standards are gradually replaced by the natural standards based on quantum physics. Due to the reproducibility, accuracy and stability of atomic system, many new technologies of quantum precision measurement have been developed based on the atomic systems. Rydberg atoms are very sensitive to external electromagnetic fields because of their large MW transition dipole moment and polarizability. With the atomic coherence effect, the ultra wideband electric field can be measured with high precision and high sensitivity. Especially for the microwave range whose frequency is higher than 1 GHz, the research of establishing microwave quantum standard is advancing steadily. In addition, all optical materials and ultra wide band atomic antenna have a wide range of applications in aerospace, military communications and other fields. In this paper, we review the researches of microwave sensing and communication based on Rydberg atoms, and introduce the progress in the quantum standard of microwave electric field strength, coherent detection, radio-over-fiber, digital communication, etc., and discuss the possible applications and research frontiers in this rapid developing field.