Semiconducting germanium, used in electrical devices, made superconducting with industry-compatible methods for use in quantum circuits

https://www.eurekalert.org/news-releases/1103766

"hybrid quantum devices: classical electronics + quantum technologies... failed attempts used ion implantation/ introduced imperfections, overcome using molecular beam epitax... with precise placement, gallium atoms substitute neatly into germanium lattice, growing thin crystal layers (epitaxy), reshaping electronic bands to be superconductive... scalable, foundry-ready quantum devices... quantum circuits, sensors, and low-power cryogenic electronics"