In today’s QPUs, almost 90% of the chip is consumed by signal routing, not qubits. Adding qubits forces denser routing, increases crosstalk, and erodes yield. These issues compound exponentially with every added qubit, which is why the entire industry has been stuck at 100-qubit processors for almost a decade.

If QPUs stay small, a last resort for scaling is stitching together smaller QPUs over lossy and low-bandwidth links, possibly over multiple cryostats. With today’s QPU sizes, even a datacenter full of cryostats would not result in a powerful quantum computer. Without hyperscaling QPUs, networking alone will not deliver economically relevant systems.

VIO scales modularly while still functioning as one unified qubit plane, because ultra high-fidelity chip-to-chip links seamlessly connect the edge qubits of each chip. The vertical signal delivery happens through a vertical chip stack, in which all signal conditioning components are directly integrated.

With up to 40,000 input-output lines, VIO-40K enables 10,000-qubit QPUs. Its architecture is optimized for high heat-transfer capacity, allowing the heat load of a 10,000-qubit processor to be managed within a single cryostat.