@techreport{TUW-109390, author = {Pfennigbauer, Martin and Leeb, Walter and Aspelmeyer, Markus and Jennewein, Thomas and B{\"o}hm, Herbert and Kaltenbaek, Rainer and Zeilinger, Anton}, title = {Quantum Communications in Space (QSpace): Comparison of Quantum Communications vs. Classical Optical Communication}, institution = {E389 - Institute of Telecommunications; Vienna University of Technology}, year = {2002} }