So, the team had another look at niobium. Specifically, they had a look at the niobium Josephson junction. The Josephson junction is the information-processing heart of the superconducting qubit.

WTe2 Josephson junction: Green slabs are layers of WTe2, orange bars are niobium electrodes, and red and blue lines denote spin up and spin down electrodes traveling on two hinges of the samples.

based on niobium nitride (NbN) grown on silicon, with ferromagnetic Josephson devices to create a flux qubit with a ...