Quantum cryptography with twisted photons through an outdoor underwater channel
Bouchard F, Sit A, Hufnagel F, Abbas A, Zhang Y, Heshami K, Fickler R, Marquardt C, Leuchs G, Boyd RW, Karimi E (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 26
Pages Range: 22563-22573
Journal Issue: 17
DOI: 10.1364/OE.26.022563
Abstract
Quantum communication has been successfully implemented in optical fibres and through free-space. Fibre systems, though capable of fast key and low error rates, are impractical in communicating with destinations without an established fibre link. Free-space quantum channels can overcome such limitations and reach long distances with the advent of satellite-to-ground links. However, turbulence, resulting from local fluctuations in refractive index, becomes a major challenge by adding errors and losses. Recently, an interest in investigating the possibility of underwater quantum channels has arisen. Here, we investigate the effect of turbulence on an underwater quantum channel using twisted photons in outdoor conditions. We study the effect of turbulence on transmitted error rates, and compare different quantum cryptographic protocols in an underwater quantum channel, showing the feasibility of high-dimensional encoding schemes. Our work may open the way for secure high-dimensional quantum communication between submersibles, and provides important input for potential submersibles-to-satellite quantum communication.
Authors with CRIS profile
Christoph Marquardt
Institut für Optik, Information und Photonik
Gerhard Leuchs
Lehrstuhl für Experimentalphysik (Optik)
Involved external institutions
University of Ottawa
Canada (CA)
National Research Council / Conseil national de recherches Canada
Canada (CA)
Canada (CA)
National Research Council / Conseil national de recherches Canada
Canada (CA)
How to cite
APA:
Bouchard, F., Sit, A., Hufnagel, F., Abbas, A., Zhang, Y., Heshami, K.,... Karimi, E. (2018). Quantum cryptography with twisted photons through an outdoor underwater channel. Optics Express, 26(17), 22563-22573. https://doi.org/10.1364/OE.26.022563
MLA:
Bouchard, Frederic, et al. "Quantum cryptography with twisted photons through an outdoor underwater channel." Optics Express 26.17 (2018): 22563-22573.
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