# Quantinuum says Helios cuts logical error rate tenfold

_Published Monday, October 19, 2026 at 6:18 PM EDT · Science · Latest · Tier 2 — Notable_

![Quantinuum says Helios cuts logical error rate tenfold — Primary](https://static.news.bitcoin.com/wp-content/uploads/2026/10/quantum-computer-chip-quantinuum.png)

Quantinuum said Monday that its Helios quantum computer achieved five errors per million operations, a tenfold improvement over its September result. The company reported 99.9995% logical fidelity, a measure of how reliably protected quantum calculations operate.

The system uses a "color code" to combine physical quantum bits into more reliable logical bits. Researchers reported that each tested increase in protection reduced remaining logical errors by a factor of 12. Quantinuum said the performance falls within its target range for Apollo, its planned fault-tolerant computer expected by 2029.

The result concerns a specific error-correction benchmark, rather than a large-scale, general-purpose computer capable of reliably executing complex algorithms.

## Sources

- [Bitcoin.com News](https://news.bitcoin.com/technology/smashed-quantum-computing-record-raises-stakes-bitcoin-security/)

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Canonical: https://techandbusiness.org/newswire/WURXEFd3iR5YzJt-b2sOcv
Published: 2026-10-19T22:18:29.780Z
Story chronology: 2026-10-19T21:55:40.000Z
Retrieved: 2026-10-20T01:10:14.107Z
Publisher: Tech & Business (techandbusiness.org)