Quantinuum's H2 simulates a 21-spin chemistry problem and produces results that match traditional computers

A research paper released as a preprint (arXiv 2609.17102) describes how Quantinuum used its H2 quantum computer to simulate a nuclear magnetic resonance (NMR) problem involving a 21-spin model of a molecule. The team used methods to reduce errors. Its results matched calculations from traditional computers and captured details that earlier quantum experiments had missed.

Running a chemistry-related problem on a trapped-ion quantum computer supports Quantinuum's plans to serve pharmaceutical and materials research.

Matching results from traditional computers is progress, but it also means those computers can still solve this particular problem. The paper describes a step toward practical quantum usefulness, not proof that quantum computers outperform classical ones. The experiment ran on H2, not Helios, and the paper has not yet been peer-reviewed.

Stadler, P., Owens, A., Granet, E., Muñoz Ramo, D., & Marthaler, M. (2026). Large-scale NMR simulation on a trapped-ion quantum computer [Preprint]. arXiv. https://arxiv.org/abs/2609.17102