# Google Demonstrates 99.99% Logical Fidelity in Willow Test By Simon Yoon Canonical URL: https://www.tokenpost.com/news/technology/33143 Published: 2026-10-16T09:17:19.000Z Updated: 2026-10-16T09:17:19.000Z Section: Technology > The experiment cut errors 40-fold but retained 8% of attempts. Larger-scale demonstrations are still needed. Google Quantum AI demonstrated 99.99% logical fidelity in prepared T-states on its Willow processor in a study published Thursday, Oct. 15, reporting a 40-fold reduction in errors. The fidelity figure measures how accurately the experiment prepared the T-states, not the accuracy of an entire quantum computer. Magic states help quantum computers perform operations needed for universal computing. The experiment transferred cultivated states from a distance-3 color code to a distance-5 surface code. It retained 8% of attempts. Larger-scale demonstrations are still needed. Blockchain networks have their own post-quantum plans. [Ethereum’s roadmap]() targets quantum-resistant infrastructure across its execution, consensus and data layers by December 2029. [Algorand’s roadmap]() sets native post-quantum accounts for 2026 and broader resilience for 2027. ## Links in this article - [Ethereum’s roadmap](https://www.tokenpost.com/news/technology/28011) - [Algorand’s roadmap](https://www.tokenpost.com/news/technology/29249)