title: Impact of turbulence in long range quantum and classical communications.
abstract: The study of the free-space distribution of quantum correlations is necessary for any future application of quantum and classical communication aiming to connect two remote locations. Here we study the propagation of a coherent laser beam over 143 km (between Tenerife and La Palma Islands of the Canary archipelagos). By attenuating the beam we also studied the propagation at the single photon level. We investigated the statistic of arrival of the incoming photons and the scintillation of the beam. From the analysis of the data, we propose the exploitation of turbulence to improve the signal to noise ratio of the signal.
authors.affiliation: Department of Information Engineering, University of Padova, via Gradenigo 6/B, 35131 Padova, Italy.
authors.forename: Ivan
authors.initials: I
authors.lastname: Capraro
authors.forename: Andrea
authors.initials: A
authors.lastname: Tomaello
authors.forename: Alberto
authors.initials: A
authors.lastname: Dall'Arche
authors.forename: Francesca
authors.initials: F
authors.lastname: Gerlin
authors.forename: Ruper
authors.initials: R
authors.lastname: Ursin
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Vallone
authors.forename: Paolo
authors.initials: P
authors.lastname: Villoresi