@InProceedings{muller2014m, author = {Müller, Christian R and Leven, Andreas and Bülow, Henning and Schmalen, Laurent and Leuchs, Gerd and Marquardt, Christoph}, title = {M-ary phase shift keying receiver beating the standard quantum limit for any signal power}, booktitle = {Proc. Eur. Conf. Opt. Commun. (ECOC)}, address = {Cannes, France}, month = Sep, year = {2014}, }