Explainers
Quantum Supremacy, Explained: Google's 2019 Claim and IBM's 2.5-Day Rebuttal
Google claimed quantum supremacy in 2019 with its Sycamore processor, but IBM quickly countered, sparking a debate over the definition and measurement of this milestone. The discussion highlights the evolving terminology from "supremacy" to "advantage" and "utility" as quantum computing matures.
Marcus Cole·October 30, 2026
