AQP Seminar: A NEAT Quantum Error Decoder

Aalto Quantum Physics Seminar (Zoom). Speaker: Prof. Evert van Nieuwenburg (Niels Bohr International Academy, Denmark)
A NEAT Quantum Error Decoder


We investigate the use of the evolutionary NEAT algorithm for finding a quantum error decoder for the toric code. The problem is formulated as a single player game, making it amenable to a reinforcement learning approach, with an agent whose policy network we directly optimise. 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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