(TheVerge) Google says that it has achieved quantum supremacy, a major milestone towards the development of quantum computers. At least, it seems to have. The announcement came in a paper that was reportedly published on the NASA website before being pulled, according to the The Financial Times which retrieved a copy before it disappeared. “To our knowledge,” Google’s paper read, “this experiment marks the first computation that can only be performed on a quantum processor.” The Google research paper was titled “Quantum supremacy using a programmable superconducting processor.”
However, the significance of Google’s announcement was disputed by at least one competitor. Speaking to the FT, IBM’s head of research Dario Gil said that Google’s claim to have achieved quantum supremacy is “just plain wrong.” Gil said that Google’s system is a specialized piece of hardware designed to solve a single problem, and falls short of being a general-purpose computer, unlike IBM’s own work.

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