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Microsoft says new quantum chip 1,000 times more reliable than predecessor
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Microsoft says new quantum chip 1,000 times more reliable than predecessor

BBC News · Jun 2, 2026, 7:24 PM · Also reported by 4 other sources

Key takeaways

  • At the heart of quantum computing are qubits, which offer the promise of answering questions that defeat today's machines, but are notoriously delicate and unstable.
  • Microsoft says the qubits on Majorana 2, its new chip, survive for an average of 20 seconds, rather than the milliseconds of Majorana 1.
  • That means the new chip is 1,000 times more reliable - an improvement in performance the tech giant compares to the difference between a phone that needs charging every day to one which needs charging every few years.

Why this matters: a developing story that could shape the day's news cycle.

Zoe Kleinman Technology editor Microsoft The Majorana 2 chip Microsoft says its new quantum chip is vastly more reliable than its previous version, paving the way for a quantum computer solving commercially useful problems within three years.

At the heart of quantum computing are qubits, which offer the promise of answering questions that defeat today's machines, but are notoriously delicate and unstable.

Microsoft says the qubits on Majorana 2, its new chip, survive for an average of 20 seconds, rather than the milliseconds of Majorana 1.

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