The article talks about superconducting cables, but these cryogenic cables are not superconducting. Seem like regular Kapton flex cables, either strip line or

The article talks about superconducting cables, but these cryogenic cables are not superconducting. Seem like regular Kapton flex cables, either strip line or broadside coupled. https://www.delft-circuits.com/wp-content/uploads/2019/08/Datasheet-CrioFlex-CF2.pdf https://www.delft-circuits.com/wp-content/uploads/2019/08/Da... I suppose you could use superconducting ribbon, or sputter thin film superconductor onto a Kapton core.