RESOURCE
Researchers at Anthropic and Harvard used an AI model in a closed loop with a circuit evaluator to redesign eight quantum computing building blocks, including elliptic curve point addition, the core step in quantum attacks on the public key cryptography that protects TLS and VPNs today. The results are circuit designs and resource estimates, not a demonstration on hardware, and they are reported in a preprint and a company blog post.
Fabric Networks
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A team from Anthropic and Harvard published a preprint on October 16, 2026 describing how an AI model, given coding tools and a program that checked each proposed circuit for correctness and scored it on qubits and gates, redesigned eight quantum computing primitives. Seven came out smaller on both qubits and gates than the best published designs. One of the eight was point addition on an elliptic curve, the operation that quantum algorithms for the elliptic curve discrete logarithm problem repeat many times over. For that task the team reports a new family of designs, one of which uses about 12 percent more qubits but 17 times fewer gates than the smallest earlier design.
These are paper results. Nothing was run on a quantum computer, and the authors frame the work as resource estimates that widen the menu of trade-offs between qubit count and run time. It is still a meaningful data point: most of the reduction in what a cryptographically relevant quantum computer would need has come from better circuits rather than better hardware, and this is another step down that curve.
The assumed timeline for breaking today's elliptic curve keys is a moving estimate, and the moves keep going one way. Nothing here changes the Canadian deadlines, it only makes them look conservative. Long lived equipment carries long lived secrets. Know which of yours still depends on elliptic curve or RSA before someone else works that out. Check your exposure in two minutes.