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Parallelized quantum error correction with fracton topological codes
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DOI：10.1103/PhysRevResearch.2.013303.png)
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Fracton topological phases have a large number of materialized symmetries that enforce a rigid structure on their excitations. Remarkably, we find that the symmetries of a quantum error-correcting code based on a fracton phase enable us to design decoding algorithms. Here we propose and implement decoding algorithms for the three-dimensional X-cube model. In our example, decoding is parallelized into a series of two-dimensional matching problems, thus significantly simplifying the most time-consuming component of the decoder. We also find that the rigid structure of its point excitations enables us to obtain high threshold error rates. Our decoding algorithms bring to light some key ideas that we expect to be useful in the design of decoders for general topological stabilizer codes. Moreover, the notion of parallelization unifies several concepts in quantum error correction. We conclude by discussing the broad applicability of our methods and we explain the connection between parallelizable codes and other methods of quantum error correction. In particular we propose that our concept represents a generalization of single-shot error correction.
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4.2
论文数:
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被引数:
2.7W
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