# Quantum experiment reduces magic-state error by a factor of 40

_Published Monday, October 26, 2026 at 6:01 PM EDT · Science · Latest · Tier 2 — Notable_

Researchers report reducing magic-state error by a factor of 40 on a superconducting quantum processor, achieving a state fidelity of 0.9999(1) while retaining 8% of attempts. Their arXiv paper tests magic state cultivation, a method intended to supply resources needed for operations in fault-tolerant quantum computing.

The experiment implemented cultivation, including switching into a surface code, and developed a fault-tolerant measurement protocol to bound fidelity. The approach offers an alternative to resource-intensive distillation protocols, but the reported fidelity comes with the limitation that only 8% of attempts were retained.

## Sources

- [arxiv.org](https://arxiv.org/abs/2512.13908)

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Canonical: https://techandbusiness.org/newswire/NHtxNn2mldIsW_9aTMFjp7
Published: 2026-10-26T22:01:43.460Z
Story chronology: 2026-10-26T19:37:59.000Z
Retrieved: 2026-10-27T01:11:59.442Z
Publisher: Tech & Business (techandbusiness.org)