By exchanging a classical material for one with unique quantum properties, scientists have made a superconducting circuit that's capable of feats long thought to be impossible.
The discovery, made by researchers from Germany, the Netherlands, and the US, overturns a century of thought on the nature of superconducting circuits, and how their currents can be tamed and put to practical use.
Unfortunately, the characteristics that makes this effortless form of electrical current so handy also happen to create endless challenges in designing superconducting versions of common electrical components., for example. This basic unit of electronics is like a one-way sign for currents, providing a means to regulate, convert, and tune the movements of electrons.
But without the usual laws of resistance at work, scientists have been unable to make superconducting electrons travel in a single direction, as they always demonstrate what is termed 'reciprocal' behavior.This fundamental assumption – that superconductivity can't violate reciprocity – has persisted since the very beginning of study in the area.
The team is confident they've ticked all the boxes required to make a solid case for their discovery. Still, there's a long way to go before we'll see superconductors at the heart of next-generation computing.
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