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Quantinuum Achieves Record Quantum Error-Correction Milestone

Quantinuum Achieves Record Quantum Error-Correction Milestone

First seen 19 Oct 2026, 15:49 UTC • •
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ThreatCluster AI
ThreatCluster •October 19, 2026 at 22:21 UTC
  • •Quantinuum achieved a world-record logical fidelity of 99.9995% on its Helios computer.
  • •The error rate is ten times lower than its previous record and 100 times lower than Google's best result.
  • •This breakthrough supports the development of a universal fault-tolerant quantum computer by 2029.

On October 19, 2026, Quantinuum announced a world-record quantum error-correction result, achieving a logical fidelity of 99.9995% on its Helios commercial computer. This result, which equates to just five errors per million operations, is ten times lower than Quantinuum's previous record set in September 2026 and 100 times lower than the best published result from Google Quantum AI. The breakthrough utilized a 'color code' within Quantinuum's error-correction architecture, demonstrating the effectiveness of its trapped-ion technology. This achievement is seen as a significant step toward the development of a universal fault-tolerant quantum computer, named Apollo, expected to be available by 2029. CEO Dr. Rajeeb Hazra emphasized that the results validate their architecture's capability for universal fault-tolerance and commercial quantum applications.

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Timeline

2026-09-19
Previous record set by Quantinuum
Quantinuum achieved a logical fidelity record prior to the latest announcement, which has now been surpassed.
Quantinuum
2026-10-19
Quantinuum announces error-correction record
Quantinuum reported achieving a logical fidelity of 99.9995% on its Helios computer, marking a significant advancement in quantum error correction.
Quantinuum

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Common questions

What is the significance of the 99.9995% fidelity?
This level of fidelity indicates a substantial reduction in error rates, crucial for developing reliable quantum computers.
How does this achievement compare to previous records?
It is ten times lower than Quantinuum's previous record and significantly better than Google's best published result.
What are the next steps for Quantinuum?
Quantinuum aims to continue refining its error-correction architecture and advance towards the Apollo project, expected by 2029.