Quantum Effects in Plasmas

The year 2025 has been designated by UNESCO as the International Year of Quantum Science and Technology. 125 years ago Max Planck's discovery of radiation quanta started the quantum era and 100 years ago quantum mechanics was discovered by Schrödinger, Heisenberg, Bohr, Pauli, Dirac, Born, Fermi and many others. By now, quantum mechanics is the theoretical foundation of most fields of physics. How about plasma physics? How important are quantum effects in plasmas? In what experiments quantum effects are observed and how can these effects be treated theoretically and via computer simulations? Starting with a brief historical overview I will discuss the broad parameter range that is characteristic for plasmas and where quantum effects are relevant. I will discuss the quantum methods that are available and which of them are of relevance for plasma physics, finishing with an outlook on future developments.