A metamaterial-based clock distribution network to build large superconducting chips

https://techxplore.com/news/2022-04-metamaterial-based-clock-network-large-superconducting.html

"Using their resonant metamaterial-based clock distribution network... performed S-parameter measurements for a 10 GHz IC design and validated a digital reciprocal quantum logic circuit with 48,0000 junctions, operating at 3.5 GHz. Remarkably, they found that their network could enable the uniform distribution of power with a variation below 1 dB across a 3x3 mm2 active chip area, with a power efficiency of approximately 30%"