Link budget and background noise for satellite quantum key distribution (Articolo in rivista)

Type
Label
  • Link budget and background noise for satellite quantum key distribution (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1367-2630/11/4/045017 (literal)
Alternative label
  • A. Tomaello, C. Bonato, V. Da Deppo, G. Naletto, P. Villoresi (2011)
    Link budget and background noise for satellite quantum key distribution
    in Advances in space research
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Tomaello, C. Bonato, V. Da Deppo, G. Naletto, P. Villoresi (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 47 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Padua, INFM, CNR, Dept Informat Engn,LUXOR, I-35131 Padua, Italy (literal)
Titolo
  • Link budget and background noise for satellite quantum key distribution (literal)
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)
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