# RIKEN and IBM Just Ran the Largest Quantum Chemistry Simulation Ever

- slug: riken-and-ibm-just-ran-the-largest-quantum-chemistry-simulation-ever
- date: 2026-03-13
- category: Quantum Computing

RIKEN and IBM used the Fugaku supercomputer in closed loop with an IBM Quantum Heron processor to calculate the electronic structure of iron-sulfur molecules—the largest and most accurate quantum chemistry experiment

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