Quantum computers have the potential to be significantly more powerful than traditional computers and could solve complex problems in medical research, energy supply, logistics, or artificial intelligence in the future. The Leipzig-based startup SaxonQ, founded in 2021, has succeeded in constructing an industrial-grade quantum computer – moving away from the traditional bulky installations towards a compact, flexible box. A key factor in this achievement is a method derived from semiconductor technology. This enables the creation of qubits, the computing units of the quantum computer, on a diamond chip just a few millimeters in size. Unlike previous quantum computers, these processors do not require cooling or complex infrastructure and are resistant to disturbances. The system is already being used by major clients and aims to enable entirely new applications for quantum computers, such as in satellites, autonomous driving, or even in smartphones in a few years.