Quantum computing news usually picks up near year’s end, as companies try to prove they’re hitting their benchmarks. However, interesting announcements have started early this summer, including a promise of useful, error-corrected quantum computing by 2028.

Many in the field expect useful quantum computers to be about five to ten years away. While some useful algorithms can run on current hardware, most complex problems will require error correction involving linked qubits forming logical qubits. These are necessary for performing complicated tasks like breaking encryption.

To achieve this, we need thousands of high-quality qubits, as existing technologies offer either quality or quantity but not both. Roadmaps exist, but significant progress is needed before 2028 looks realistic. So while the promise is exciting, it may be a touch optimistic.