29.1 A 22nm FD-SOI <1.2mW/Active-Qubit AWG-Free Cryo-CMOS Controller for Fluxonium Qubits

Superconducting quantum processors are among the most advanced quantum computing technologies. Systems based on these devices have enabled post-classical computation [1] and proof-of-concept execution of quantum-error-correction protocols [2]. While other qubit technologies employ naturally-occurring quantum mechanical degrees of freedom to encode information, those used by superconducting qubits are defined at the circuit level. Today’s state-of-the-art superconducting quantum processors use transmon qubits, but these are just one of a rich set of superconducting qubits; in considering the system-level optimization of a large-scale quantum computer, alternative qubit topologies may prove advantageous. Here, we consider cryo-CMOS control of a fluxonium qubit, one of the most promising of emerging superconducting qubits.