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Design quantum circuits that beat the best published ones

Unite.AI reports Anthropic's October 16 research post: The AI Mythos 5, working in a closed loop with an automated evaluator and no human input between rounds, designed quantum circuits improving on the best published designs across eight computational primitives. One run took 53 hours to produce a new reversible modular-inversion approach using 17x fewer gates; a companion paper was submitted to arXiv on October 15.

How it works

  1. Give the AI a one-paragraph brief and the evaluator's scoring rule
  2. The AI proposes circuit designs in Python
  3. The evaluator checks correctness and scores qubit-times-gate cost
  4. The AI revises with no human input between rounds
  5. After 53 hours it derives and formally verifies a new decoding approach in Lean
  6. Final designs cut gate counts up to 17x versus the best published circuits

Why it’s worth knowing

Left alone in a scoring loop for 53 hours, it invented a circuit approach human researchers had not published.

Where it’s from

Summarized from a public post on unite.ai. See the original ↗

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