Fujitsu February 20 announced a collaboration with QuTech for the development of the world’s first cryogenic electronic circuits for controlling diamond-based quantum bits. Enabling convenient operation of both the qubits and the control electronics in a compact cryogenic refrigerator, the new technique addresses the ‘wiring bottleneck’ in cooling qubits while maintaining high quality performance, marking a significant milestone toward the realization of larger-scale quantum computers.