Quantinuum has announced a new industry benchmark, reporting a Quantum Volume (QV) of 2²³ = 8,388,608 on its H2 quantum computer, the highest reported QV to date. The QV metric, originally introduced by IBM, reflects a quantum system’s overall computational performance by integrating factors such as qubit count, gate fidelity, connectivity, and error rates. This achievement concludes a five-year commitment by Quantinuum to increase QV tenfold annually.
The milestone was reached using the H2 platform and driven by benchmarking leadership from Dr. Charlie Baldwin, a noted expert in quantum hardware performance. Quantinuum asserts that the QV metric remains a reliable and non-gameable benchmark for the NISQ era, enabling direct comparison of systems advancing toward fault-tolerant quantum computing. In support of this, Quantinuum has also published benchmarking results and performance comparisons across architectures.
This new performance level builds upon a string of previously demonstrated capabilities, including logical qubit teleportation, quantum supremacy for certified randomness, and encoded memory outperforming earlier implementations. Quantinuum’s next-generation system, Helios, is expected to surpass H2 in both scale and fidelity, reinforcing the company’s strategy of simultaneous performance improvement and system expansion.
Full announcement available here.
May 13, 2025
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