Max Planck Institutes
MPI for the Science of Light
Press and Public Relations
2/2015Secret Code in a Laser Pulse
Soon, the NSA and other secret services may no longer be able to secretly eavesdrop on our communications without being detected – at least if quantum cryptography becomes popular. A team headed by Christoph Marquardt and Gerd Leuchs at the Max Planck Institute for the Science of Light in Erlangen is laying the foundations for the tap-proof distribution of cryptographic keys even via satellite. For the time being, the researchers have brought quantum communication into the light of day.