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A NEAT quantum error decoder

Hugo Théveniaut, Evert van Nieuwenburg

SciPost Phys. 11, 005 (2021) · published 12 July 2021


We investigate the use of the evolutionary NEAT algorithm for the optimization of a policy network that performs quantum error decoding on the toric code, with bitflip and depolarizing noise, one qubit at a time. We find that these NEAT-optimized network decoders have similar performance to previously reported machine-learning based decoders, but use roughly three to four orders of magnitude fewer parameters to do so.

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