Enabling Quantum Scalability Using Cryogenic CMOS
Quantum computing is approaching an engineering wall. Today's systems rely on room-temperature control and readout electronics connected to cryogenic quantum processors through dense bundles of individual cabling; an architecture that works at hundreds of qubits but cannot scale to the thousands or millions required for fault-tolerant machines.
The solution lies in the semiconductor industry itself: moving control and readout electronics into the cryostat, as close to the quantum processor as possible. This talk explores how cryogenic CMOS makes this possible, and what it demands of circuit design and packaging when silicon must operate reliably at deep cryogenic temperatures with tight power budgets.
Drawing on Kelvin Quantum's work developing cryogenic CMOS based control systems, we present the practical realities of designing silicon for the coldest operating environments in the universe and how in-fridge integration improves connectivity, reduces power and noise, and simplifies system architecture.
Finally, we examine where foundries, packaging providers, and the broader supply chain fit into the quantum scaling roadmap, and why the next generation of quantum computers will be built as much in fabs as in physics labs.
