Error correction for encoded quantum annealing

@article{Pastawski2016ErrorCF,
  title={Error correction for encoded quantum annealing},
  author={Fernando Pastawski and John Preskill},
  journal={Physical Review A},
  year={2016},
  volume={93},
  pages={052325}
}
Recently, W. Lechner, P. Hauke, and P. Zoller [Sci. Adv. 1, e1500838 (2015)] have proposed a quantum annealing architecture, in which a classical spin glass with all-to-all pairwise connectivity is simulated by a spin glass with geometrically local interactions. We interpret this architecture as a classical error-correcting code, which is highly robust against weakly correlated bit-flip noise, and we analyze the code's performance using a belief-propagation decoding algorithm. Our observations… 
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