© Bernd Weißbrod/dpa

Trump praised the German government's research program in this area: Berlin had released two billion euros for the development of quantum computers in the global race for the technology of the future. The aim is to build a competitive quantum computer "Made in Germany" within the next five years, it was announced in May.

In a Q.ANT laboratory, engineers Kirill Spasibko (r) and Louise Hoppe (l) prepare to test a newly developed photonic chip with a laser beam.