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Communication Dans Un Congrès Année : 2021

Resource allocation in a Quantum Key Distribution Network with LEO and GEO trusted-repeaters

Milo Grillo
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Mohammad-Ali Khalighi
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Résumé

Quantum Key Distribution (QKD) is a technology that enables the exchange of private encryption keys between two legitimate parties, using for this purpose different protocols that involve components of quantum mechanics. Since the rate at which secret keys can be exchanged depends on the attenuation that the optical signals experience, it is convenient to replace terrestrial fibers with optical satellite links to implement a QKD network at a global scale. Then, satellite nodes can take the role of trusted-relays, forwarding the secret keys from the sources to the destinations. However, since the rate at which secret keys can be generated in each quantum link is limited, it is very important to select the intermediate satellite nodes to interconnect ground stations efficiently. This paper studies the most convenient allocation of resources in a QKD network that combines both GEO and LEO satellites, which provide complementary services according to their position in the sky. The aim of the centralized routing algorithm is to select the most convenient trusted-relays to forward the secret keys between pairs of ground stations, verifying the constraints that satelliteto-ground and inter-satellite quantum channels have in practice.
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Dates et versions

hal-03452610 , version 1 (27-11-2021)

Identifiants

Citer

Milo Grillo, Alexis A Dowhuszko, Mohammad-Ali Khalighi, Jyri Hamalainen. Resource allocation in a Quantum Key Distribution Network with LEO and GEO trusted-repeaters. 2021 17th International Symposium on Wireless Communication Systems (ISWCS), Sep 2021, Berlin, Germany. pp.1-6, ⟨10.1109/ISWCS49558.2021.9562139⟩. ⟨hal-03452610⟩
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