Overview
- IBM and three research partners announced the coordinated demonstrations on July 30, 2026, and published circuits and data so the community can independently benchmark and try classical counter‑claims.
- A University of Chicago–IBM team encoded 70 logical qubits, ran 2,415 logical two‑qubit gates and 468 logical T gates, completed the run in about 15 minutes, and reported logical error rates roughly ten times lower than the underlying physical error rates.
- IBM and Qedma used Qedma’s QESEM error‑mitigation software on IBM hardware to probe long‑time dynamics in systems up to 74 qubits and found that multiple top classical approaches, including runs on Fugaku, failed to give consistent answers at that scale.
- Algorithmiq and IBM presented a simulation of heterogeneous quantum matter that has resisted eight months of open challenge on the Quantum Advantage Tracker and released a classical benchmark called monoprop for others to test future claims.
- Researchers say these results push verification and open benchmarking forward by combining structured circuits, noise control, cross‑device checks, and unbiased mitigation, yet experts warn that thousands of logical qubits and fully fault‑tolerant machines would still be needed to threaten common public‑key cryptography.