Experimental demonstration of kilometer-range quantum digital signatures
Ross J. Donaldson, Robert John Collins, Klaudia Kleczkowska, Ryan Amiri, Petros Wallden, Vedran Dunjko, John R. Jeffers, Erika Andersson, Gerald S. Buller · Physical Review A · 2016
A quantum scheme to guarantee the authenticity and transferability of messages is demonstrated. The optical implementation, built on previous theoretical proposals by some of the authors, is a step forward to the development of practical signature protocols in the field of quantum cryptography.