Long-range beam propagation for single-photon communications

Capraro, Ivan; Tomaello, Andrea; Dall’Arche, Alberto; Villoresi, Paolo

doi:10.1117/12.893435

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2014

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“…Through comparison with seeing calculated by traditional methods, it will be possible to describe a variety of turbulence phenomena, in particular the comparison of the turbulence in the ground layer to the turbulence in the layers at higher altitude. Finally, detectors with very high temporal resolution can provide useful information for single photon propagation for quantum astronomy and quantum communications (see, for instance, Cavazzani et al 2011;Corvaja et al 2011;and Capraro et al 2011). The LSM is formed by two towers with mobile platforms.…”

Section: Introductionmentioning

confidence: 99%

Ground Layer Laser Seeing Meter

Cavazzani¹,

Rodeghiero²,

Capraro³

et al. 2014

Publications of the Astronomical Society of the Pacific

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ABSTRACT. The seeing calculation and its evolution during the night is a key point for the operation of telescopes and adaptive optics systems. Currently, there are various instruments able to measure the seeing, for example, the DIMM (differential image motion monitor) and the MASS (multi aperture scintillation sensor). This paper describes a new tool for the local ground layer seeing measurement. In particular, we want to derive the Fried parameter r 0 through a laser beam horizontal propagation. This is a new method for the experimental study of low-altitude atmospheric turbulence. Finally, we sketch an experimental setup for the Asiago Ekar Observatory and its possible applications.

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Section: Introductionmentioning

confidence: 99%