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Private communication with quantum cascade laser photonic chaos

Author

Listed:
  • Olivier Spitz

    (LTCI, Télécom Paris, Institut Polytechnique de Paris
    mirSense, Centre d’intégration NanoInnov)

  • Andreas Herdt

    (Technische Universität Darmstadt)

  • Jiagui Wu

    (Fang Lu Mesoscopic Optics and Quantum Electronics Laboratory, University of California Los Angeles
    College of Electronic and Information Engineering, Southwest University)

  • Grégory Maisons

    (mirSense, Centre d’intégration NanoInnov)

  • Mathieu Carras

    (mirSense, Centre d’intégration NanoInnov)

  • Chee-Wei Wong

    (Fang Lu Mesoscopic Optics and Quantum Electronics Laboratory, University of California Los Angeles)

  • Wolfgang Elsäßer

    (Technische Universität Darmstadt)

  • Frédéric Grillot

    (LTCI, Télécom Paris, Institut Polytechnique de Paris
    University of New-Mexico)

Abstract

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.

Suggested Citation

  • Olivier Spitz & Andreas Herdt & Jiagui Wu & Grégory Maisons & Mathieu Carras & Chee-Wei Wong & Wolfgang Elsäßer & Frédéric Grillot, 2021. "Private communication with quantum cascade laser photonic chaos," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23527-9
    DOI: 10.1038/s41467-021-23527-9
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    Cited by:

    1. Hamza Dely & Mahdieh Joharifar & Laureline Durupt & Armands Ostrovskis & Richard Schatz & Thomas Bonazzi & Gregory Maisons & Djamal Gacemi & Toms Salgals & Lu Zhang & Sandis Spolitis & Yan-Ting Sun & , 2024. "Unipolar quantum optoelectronics for high speed direct modulation and transmission in 8–14 µm atmospheric window," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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