http://www.cnr.it/ontology/cnr/individuo/prodotto/ID25501

Feasibility of satellite quantum key distribution (Articolo in rivista)

Type

Label

Feasibility of satellite quantum key distribution (Articolo in rivista) (literal)

Anno

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Alternative label

C. Bonato, A. Tomaello, V. Da Deppo, G. Naletto, P. Villoresi (2009)
Feasibility of satellite quantum key distribution
in New journal of physics; IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
(literal)

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Pagina inizio

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Rivista

Note

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Department of Information Engineering, University of Padova CNR-INFM, LUXOR Laboratory for Ultraviolet X-Ray Optical Research, Gradenigo 6, 35131, Padova, Italy (literal)

Titolo

Abstract

In this paper, we present a novel analysis of the feasibility of quantum key distribution between a LEO satellite and a ground station. First of all, we study signal propagation through a turbulent atmosphere for uplinks and downlinks, discussing the contribution of beam spreading and beam wandering. Then we introduce a model for the background noise of the channel during night-time and day-time, calculating the signal-to-noise ratio for different configurations. We also discuss the expected error-rate due to imperfect polarization compensation in the channel. Finally, we calculate the expected key generation rate of a secure key for different configurations (uplink, downlink) and for different protocols (BB84 with and without decoy states, entanglement-based Ekert91 protocol) (literal)

Editore