Quantinuum Breaks Error-Correction World Record by 10x, Validating Its Leading Path to Fault-Tolerant Quantum Computing by 2029
Key Highlights
- ➤Quantinuum (QNT) achieves 99.9995% logical fidelity on its Helios computer
- ➤Error rate is 10x lower than Quantinuum's September 2026 record
- ➤Result is 100x better than Google's best published superconducting-system result
- ➤Logical errors fell 12x with each tested increase in code distance
- ➤Apollo fault-tolerant quantum computer remains targeted for availability by 2029
Expert Statements
Rajeeb Hazra, CEO of Quantinuum
“With this result, we've proven that we have the error-correction architecture and trapped-ion technology required to achieve universal fault-tolerance.”
Rajeeb Hazra, CEO of Quantinuum
“We have reduced error rates tenfold in rapid succession using a different code on the same commercial hardware, demonstrating the flexibility of our error-correction architecture.”
Rajeeb Hazra, CEO of Quantinuum
“We've crossed the threshold necessary for exponential improvements in accuracy, reinforcing our path to Apollo and how we can help users unlock commercial value from quantum at scale.”
Robin Blume-Kohout, Co-director of Sandia National Laboratories' Quantum Performance Lab
“This is a significant milestone that quantum computing researchers have been working toward for many years.”
Robin Blume-Kohout, Co-director of Sandia National Laboratories' Quantum Performance Lab
“The paper demonstrates real, serious performance gains from quantum error correction—a logical qubit nearly 100x better than its component physical qubits.”
Robin Blume-Kohout, Co-director of Sandia National Laboratories' Quantum Performance Lab
“A scaled-up version of this system could reach the reliability required for useful fault-tolerant computation at a feasible size—less than a million physical qubits—which improves the outlook for practical quantum computing.”
Robin Blume-Kohout, Co-director of Sandia National Laboratories' Quantum Performance Lab
“These findings go a long way to retire one of the field's central technical risks.”
Quantinuum Breaks Error-Correction World Record by 10x, Validating Its Leading Path to Fault-Tolerant Quantum Computing by 2029 PR Newswire
BROOMFIELD, Colo., Oct. 19, 2026 * Quantinuum's Helios computer achieves a world-record 99.9995% logical fidelity—just five errors in a million operations—using the company's error-correction architecture. * Error rate is 10x lower than Quantinuum's own September 2026 record and 100x lower than the best published result across all other hardware modalities, which was reported by Google Quantum AI using a superconducting system. * Quantinuum's successive breakthroughs used different codes on the same hardware, demonstrating how its error-correction architecture and trapped-ion technology drive rapid gains in accuracy, with performance now in the target range for Apollo. BROOMFIELD, Colo., Oct. 19, 2026 /PRNewswire/ -- Quantinuum (NASDAQ: QNT), a leading full-stack quantum computing company, today announced a world-record quantum error-correction result, achieving a logical fidelity of 99.9995% on its Helios commercial computer using the company's error-correction architecture. This marks Quantinuum's second breakthrough in two months, demonstrating how its highly accurate trapped-ion hardware and flexible architecture work together to deliver rapid improvements in accuracy.
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