Google Tackles a Key Quantum Hurdle. What It Means for Bitcoin

Google says it has shown, for the first time, a practical solution to one of quantum computing’s biggest hurdles. The method cut errors about 40-fold on its Willow chip in research published in Science on October 15. Quantum computers are a new kind of machine that may one day crack the codes protecting Bitcoin (BTC). Today’s machines are far too small for that. Google says its method could reduce how big future machines need to be. How Google Grew a Cleaner Quantum Ingredient To run useful programs, a quantum computer needs certain operations, which it builds from special ingredients called magic states. Google said some estimates suggest making clean ones could take up to 95% of a machine’s capacity. Google’s method, called magic state cultivation, works by elimination.

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