Free-space quantum-key distribution
W. T. Buttler, Richard Hughes, Paul G. Kwiat, G. G. Luther, George L. Morgan, J. E. Nordholt, Charles G. Peterson, Charles M. Simmons · Physical Review A · 1998
A working free-space quantum key distribution (QKD) system has been developed and tested over a 205-m indoor optical path at Los Alamos National Laboratory under fluorescent lighting conditions. Results show that free-space QKD can provide a secure real-time key distribution between parties who have a need to communicate secretly.