Ultrathin synthesized niobium diselenide superconductors remaining stable in ambient air for scalable integration into quantum processors

https://phys.org/news/2026-08-air-stable-ultrathin-superconductors-scalable.html

"atomically thin superconductors offer massive kinetic inductance/ dramatically shrink quantum circuits, but oxidize/ degrade almost immediately outside inert environment... overcome growing niobium diselenide underneath graphene protective monolayer, shielding underlying superconductor from atmospheric oxygen while guiding it to form smooth, wafer-scale layer... stayed robust when integrated into test microwave circuit... tiny superconducting quantum hardware, scalable quantum computers"