Space-to-ground quantum-communication using an optical ground station: a   feasibility study
  We have tested the experimental prerequisites for a Space-to-Ground quantum communication link between satellites and an optical ground station. The feasibility of our ideas is being assessed using the facilities of the ASI Matera Laser Ranging Observatory (MLRO). Specific emphasis is put on the necessary technological modifications of the existing infrastructure to achieve single photon reception from an orbiting satellite. 
P. Villoresi, F. Tamburini, M. Aspelmeyer, T. Jennewein, R. Ursin, C.   Pernechele, G. Bianco, A. Zeilinger, C. Barbieri