Experimental open-air quantum key distribution with a single-photon source
Experimental open-air quantum key distribution with a single-photon source
We describe the implementation of a quantum key distribution (QKD) system using a single-photon source, operating at night in open air. The single-photon source at the heart of the functional and reliable set-up relies on the pulsed excitation of a single nitrogen-vacancy colour centre in a diamond nanocrystal. We tested …