In a quantum computer, pure silicon is not enough - only one specific type of silicon atom will do.
The good stuff is silicon-28, and physicists in the US have worked out how to produce it with 40 times greater purity than ever before.
Even better, they can do it in the lab instead of relying on samples made ten years ago in a huge, repurposed plutonium plant in St Petersburg.
This promises to solve a serious supply problem in quantum computing research.
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