Superconducting quantum processor uses 90% less wiring resulting in 75% less heat from wires, saving delicate quantum state

https://phys.org/news/2026-03-superconducting-quantum-processor-significantly-wiring.html

"require 1 or 2 dedicated coaxial cables for every qubit, impossible as scale toward 1K qubits... overcome using frequency- multiplexed selective drive letting 1 wire control up to 20 qubits simultaneously with distinct microwave frequencies for each, routed through silicon vias into vertical 3D plane, instead of across chip surface which would waste space... nearly 10X reduced hardware footprint, processor maintained at 10 mK, 99.8% gate fidelity, scalable, cheaper, CMOS-compatible fabrication"