A Cryo-BiCMOS Controller for Quantum Computers based on Trapped Beryllium Ions. - Peter Toth; Paul Shine Eugine; Yerzhan Kudabay; Kaoru Yamashita; Sebastian Halama; Judi Parvizinejad; Marco Bonkowski; Hiroki Ishikuro; Christian Ospelkaus; Vadim Issakov (IEEE J. Solid State Circuits, 2026)