IBM Demonstrates Quantum Advantage Over Fugaku Supercomputer

On July 30, 2026, IBM announced two major milestones in quantum advantage, demonstrating computations that surpass the capabilities of state-of-the-art classical simulations. In collaboration with Qedma Quantum Computing, IBM utilized its cloud-accessible Heron processor and QESEM error-reduction software to resolve complex quantum dynamics in a two-dimensional Floquet Ising model. This experiment involved up to 74 qubits and produced results that exceeded the capacity of the Fugaku supercomputer. The findings were independently validated using Quantinuum trapped-ion hardware to ensure the results reflected real physics rather than device errors.

Simultaneously, IBM and the University of Chicago developed a new construction of encoded quantum circuits to execute 70 logical qubits. This second demonstration completed a computationally hard task in approximately 15 minutes, a feat researchers stated would be infeasible for leading classical methods. IBM also reported a third demonstration involving Algorithmiq.

These breakthroughs aim to move quantum computing toward practical scientific and commercial applications, such as the exploration of light-induced superconductors and ultrafast optoelectronics. To maintain transparency, the researchers published their circuits and results to the Quantum Advantage Tracker for community benchmarking. The efforts focused heavily on establishing trust and verifiability in quantum results to bridge the gap between experimental success and real-world utility.