IBM Research on September 15, 2026, published an account of work proving unconditional theoretical separations between shallow quantum circuits and large language models: one functional problem and one sampling problem for which shallow quantum circuits hold a provable advantage over LLMs. The post's byline lists Srinivasan Arunachalam, Arkopal Dutt, Hari Krovi, Rik Sengupta, and Ryan Mandelbaum. It describes the paper "Separating quantum circuits from classical LLMs," by Arunachalam, Dutt…
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