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Google says magic state cultivation cuts quantum errors 40-fold on Willow chip

Google Quantum AI reports in Science that magic state cultivation reduced errors about 40 times on its Willow processor, producing magic states with 99.99% fidelity.

Why it matters: Cheaper, cleaner magic states bring forward useful quantum work such as drug and materials design, and with it the risk to encryption protecting bank logins and Bitcoin wallets.

InvestIn.News NewsDesk · 1 min read
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Picture from Decrypt for: Google says magic state cultivation cuts quantum errors 40-fold on Willow chip
Image: Decrypt
Original reporting: Jose Antonio Lanz, Decrypt

Key points

  • Magic state cultivation cut errors roughly 40-fold on the Willow chip, with T-states reaching 99.99% logical fidelity.
  • Only about 8% of attempts passed every check, so the chip discards more than nine in 10 tries.

The technique produced magic states with 99.99% fidelity, according to Google, turning a long-theoretical trick into something that runs on real hardware.

Magic states act as single-use fuel cells for the harder operations that error correction cannot protect directly. The 2004 standard fix, magic state distillation, works but needs sprawling qubit factories; cultivation instead filters a rough state through checks on a tiny patch of the chip.

Only about 8% of attempts passed every check, so more than nine in 10 tries are discarded.

What to watch: Google says the next step is running magic state cultivation at a larger scale.

Read the full story on Decrypt

Live updates on NewsFeeds:AIDesk editor: Keshav Aggarwal (accountable for this page; this summary was not edited by hand)

How this was produced: an AI model wrote this summary of Decrypt’s report, which we credit and link above. Read our Editorial and AI policy. Spotted a mistake? See Corrections.

Not investment advice. Read the risk disclaimer.

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