IBM says its latest quantum processor, Quantum Heron Q2, has reached 99.9% fidelity on two-qubit gates, a technical benchmark the company says could help advance error-corrected quantum computing. The result marks one of the clearest signs yet that hardware performance is improving in ways that matter for larger, more practical systems.

Two-qubit gate fidelity is a key measure of how reliably a quantum device can perform operations between qubits. Higher fidelity reduces errors and can make it easier to build systems that scale beyond today’s experimental limits. IBM framed the milestone as part of its broader push to commercialize quantum computing and strengthen the case for real-world applications.

The company has been racing other major players to improve both qubit quality and system stability, two hurdles that remain central to the field. While quantum computers are still far from replacing classical machines for most tasks, gains like this suggest the industry is steadily moving toward more usable and error-tolerant architectures.

IBM did not claim the chip is ready for broad deployment, but the announcement adds momentum to a sector where progress is often measured in incremental engineering breakthroughs. For researchers and investors alike, the result underscores how much of quantum computing’s near-term future depends on reducing errors rather than simply adding more qubits.