Lab responsible PSI and Technician with focus on cryogenics. Raphael Keller is part of the Superconducting Circuits team of the ETH Zurich - PSI Quantum Computing Hub. He joined the Quantum Device Lab in July 2021 after he worked for the Quantum Device Lab from 2016 to 2018. Previously he completed an apprenticeship as a polymechanic and a part-time continuing education in Mechatronic Systems Engineering. Between 2018 and 2021 Raphael has worked for Santex Rimar Group as a design engineer.