From Experiments motivated initially by curiosity concerning phenomena like quantum entanglement, the randomness of the individual event, or Schrödinger's cat paradox, Quantum Communication has reached a rather advanced level. Quantum Cryptography has recently covered Intercontinental distances. Quantum Teleportation has been realized on ground over 150 km and also up to the Chinese quantum satellite Micius. This work lays the basis for a future quantum internet with many nodes connected by glass fibers, free space link´s and satellites.
