Private communication with quantum cascade laser photonic chaos
| Autor: | Wolfgang Elsäßer, Chee Wei Wong, Olivier Spitz, Mathieu Carras, Andreas Herdt, Gregory Maisons, Frédéric Grillot, Jiagui Wu |
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| Přispěvatelé: | Institut Polytechnique de Paris (IP Paris), Département Communications & Electronique (COMELEC), Télécom ParisTech, Télécommunications Optiques (GTO), Laboratoire Traitement et Communication de l'Information (LTCI), Institut Mines-Télécom [Paris] (IMT)-Télécom Paris-Institut Mines-Télécom [Paris] (IMT)-Télécom Paris, Technical University Darmstadt (TU), University of California [Los Angeles] (UCLA), University of California, Mirsense, Nanno-INNOV |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fibre optics and optical communications
Computer science Science Optical communication General Physics and Astronomy Data security 02 engineering and technology Encryption 01 natural sciences General Biochemistry Genetics and Molecular Biology Electromagnetic interference Article 010309 optics [SPI]Engineering Sciences [physics] 0103 physical sciences Synchronization (computer science) Mid-infrared photonics Electronic engineering Computer Science::Cryptography and Security Multidisciplinary business.industry Transmitter Physical layer General Chemistry 021001 nanoscience & nanotechnology Electrical and electronic engineering Key (cryptography) 0210 nano-technology business |
| Zdroj: | Nature Communications Nature Communications, Nature Publishing Group, 2021, 12 (1), ⟨10.1038/s41467-021-23527-9⟩ Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021) |
| ISSN: | 2041-1723 |
| Popis: | Mid-infrared free-space optical communication has a large potential for high speed communication due to its immunity to electromagnetic interference. However, data security against eavesdroppers is among the obstacles for private free-space communication. Here, we show that two uni-directionally coupled quantum cascade lasers operating in the chaotic regime and the synchronization between them allow for the extraction of the information that has been camouflaged in the chaotic emission. This building block represents a key tool to implement a high degree of privacy directly on the physical layer. We realize a proof-of-concept communication at a wavelength of 5.7 μm with a message encryption at a bit rate of 0.5 Mbit/s. Our demonstration of private free-space communication between a transmitter and receiver opens strategies for physical encryption and decryption of a digital message. Free-space communication in the mid-IR domain has many potential applications, but security is still challenging. Here, the authors use chaos synchronization in a QCL-based free-space link as a way to increase privacy of such transmissions. |
| Databáze: | OpenAIRE |
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