Atmospheric Quantum Channels with Weak and Strong Turbulence.
The free-space transfer of high-fidelity optical signals between remote locations has many applications, including both classical and quantum communication, precision navigation, clock synchronization, etc. The physical processes that contribute to signal fading and loss need to be carefully analyzed in the theory of light propagation through the atmospheric turbulence. Here we derive the probability distribution for the atmospheric transmittance including beam wandering, beam shape deformation, and beam-broadening effects. Our model, referred to as the elliptic beam approximation, applies to weak, weak-to-moderate, and strong turbulence and hence to the most important regimes in atmospheric communication scenarios.
Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, D-18059 Rostock, Germany.|Bogolyubov Institute for Theoretical Physics, NAS of Ukraine, Vulytsya Metrologichna 14-b, 03680 Kiev, Ukraine.
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Vasylyev
Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, D-18059 Rostock, Germany.|Institute of Physics, NAS of Ukraine, Prospect Nauky 46, 03028 Kiev, Ukraine.
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Semenov
Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, D-18059 Rostock, Germany.
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Vogel