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    Quantum error correction codes for truncated SU(2) lattice gauge theories

    Xiaojun Yao*

    • *Contact author: xjyao@uw.edu

    Phys. Rev. D 113, 114512 – Published 11 June, 2026

    DOI: https://doi.org/10.1103/5yg7-6mph

    Abstract

    We construct two quantum error correction codes for pure SU(2) lattice gauge theory in the electric basis truncated at the electric flux jmax=1/2, which are applicable on quasi-1D plaquette chains, 2D honeycomb and 3D triamond and hyperhoneycomb lattices. The first code converts Gauss’s law at each vertex into a stabilizer while the second only uses half of the vertices and is locally the carbon code. Both codes are able to correct single-qubit errors. The electric and magnetic terms in the SU(2) Hamiltonian are expressed in terms of logical gates in both codes. The logical-gate Hamiltonian in the first code exactly matches the spin Hamiltonian for gauge singlet states found in previous work.

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