Quantum Limits in Optical Communications
| Autor: | Ludwig Kunz, Michał Jachura, Konrad Banaszek, Marcin Jarzyna |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Quantum Physics business.industry Optical communication Physics::Optics FOS: Physical sciences 02 engineering and technology Noise (electronics) Atomic and Molecular Physics and Optics symbols.namesake Noisy-channel coding theorem 020210 optoelectronics & photonics Additive white Gaussian noise Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering symbols Electronic engineering Limit (mathematics) Photonics business Quantum Physics (quant-ph) Physics - Optics Free-space optical communication Optics (physics.optics) |
| DOI: | 10.48550/arxiv.2002.05766 |
| Popis: | This tutorial reviews the Holevo capacity limit as a universal tool to analyze the ultimate transmission rates in a variety of optical communication scenarios, ranging from conventional optically amplified fiber links to free-space communication with power-limited optical signals. The canonical additive white Gaussian noise model is used to describe the propagation of the optical signal. The Holevo limit exceeds substantially the standard Shannon limit when the power spectral density of noise acquired in the course of propagation is small compared to the energy of a single photon at the carrier frequency per unit time-bandwidth area. General results are illustrated with a discussion of efficient communication strategies in the photon-starved regime. Comment: 14 pages, 10 figures. This tutorial is to be published in the Special Issue of Journal of Lightwave Technology on the European Conference on Optical Communication (ECOC) 2019 |
| Databáze: | OpenAIRE |
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