Increasing the secret key rate of satellite-to-ground entanglement-based QKD assisted by adaptive optics - Archive ouverte HAL
Preprints, Working Papers, ... Year : 2024

Increasing the secret key rate of satellite-to-ground entanglement-based QKD assisted by adaptive optics

Valentina Marulanda Acosta
  • Function : Author
Daniele Dequal
  • Function : Author
Matteo Schiavon
  • Function : Author
Aurelie Montmerle-Bonnefois
  • Function : Author
Caroline Lim
  • Function : Author
Jean-Marc Conan
  • Function : Author
Eleni Diamanti

Abstract

Future quantum networks will be composed of both terrestrial links for metropolitan and continent-scale connections and space-based links for global coverage and infrastructure resilience. However, the propagation of quantum signals through the atmosphere is severely impacted by the effects of turbulence. This is even more the case for entanglement-based quantum communication protocols requiring two free-space channels to be considered simultaneously. In this work, we assess the advantage of turbulence mitigation by adaptive optics, in particular during daytime link operation, so as to increase the coupling of the received signal into an optical fiber. We show in particular that this improves the performance of entanglement-based quantum key distribution by up to a few hundred bits per second when compared with the uncorrected scenario
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Dates and versions

hal-04803783 , version 1 (26-11-2024)

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Valentina Marulanda Acosta, Daniele Dequal, Matteo Schiavon, Aurelie Montmerle-Bonnefois, Caroline Lim, et al.. Increasing the secret key rate of satellite-to-ground entanglement-based QKD assisted by adaptive optics. 2024. ⟨hal-04803783⟩
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