Graph states have been used to construct quantum error correction codes for
independent errors. Hypergraph states generalize graph states, and symmetric
hypergraph states have been shown to allow for the correction of correlated
errors. In this paper, it is shown that symmetric hypergraph states are not
useful for the correction of independent errors, at least for up to 30 qubits.
Furthermore, error correction for error models with protected qubits is
explored. A class of known graph codes for this scenario is generalized to
hypergraph codes.Comment: 18 pages, 2 figures; corrected number of figures; 16.02.2018: removed
minor inconsistencies in font choice, added supplemental files 23.02.2018:
added journal re