2012/02/29 by James R. Wootton, Daniel Loss
Physics and Astronomy · #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1103/physrevlett.109.160503
5 pages, 3 figures. Published version + extra material; Phys. Rev. Lett. (2012)
arxiv created 2012/10/03 · arxiv updated 2015/06/04
An algorithm is presented for error correction in the surface code quantum memory. This is shown to correct depolarizing noise up to a threshold error rate of 18.5%, exceeding previous results and coming close to the upper bound of 18.9%. The time complexity of the algorithm is found to be polynomial with error suppression, allowing efficient error correction for codes of realistic sizes.