# Berlekamp–Massey decoding

Anthropic let Claude design quantum circuits in a closed loop with no human input between rounds: given plain-language specifications and an automated evaluator, the model produced new designs for eight computational primitives spanning chemistry, optimization, physics simulation and number theory, using both fewer qubits and fewer gates than the best previously published circuits, in some cases by an order of magnitude or more. On the elliptic-curve point-addition task it worked for 53 hours with minimal human input and produced the first reversible divsteps implementation with no stored branch history; its Reed–Solomon decoder for DQI cut gates 12-fold relative to Google's previous construction.

Anthropic let Claude design quantum circuits in a closed loop with no human input between rounds: given plain-language specifications and an automated evaluator, the model produced new designs for eight computational primitives spanning chemistry, optimization, physics simulation and number theory, using both fewer qubits and fewer gates than the best previously published circuits, in some cases by an order of magnitude or more. On the elliptic-curve point-addition task it worked for 53 hours with minimal human input and produced the first reversible divsteps implementation with no stored branch history; its Reed–Solomon decoder for DQI cut gates 12-fold relative to Google's previous construction.