← Plenio-Vedral-Knight constant-excitation code

Entry facet

Representation ladder

R1 checks through R5 cross-model views, with canonicality and provenance.

  1. R1

    Checks

    Sparse Pauli generators in symplectic form, including stabilizer and gauge rows.

    • signed-source-mixed-pauli-tableau canonical

      Hermitian Y = iXZ and left-to-right source qubit order fix the phase convention. Common Pauli eigensymmetries of source equations (8)-(9) determine the tableau. Q = IIIIXZZY maps the signed source sector to the positive-generator sector; constant excitation is stated in the source frame. The constructor-derived picture displays incidence, not spatial locality. The signed rows and source-basis regression are documented in docs/lit/qubit_8_1_3/qubit_8_1_3-eczoo-intake.md.

      References: plenio1996realistic_pvk

  2. R2

    Structure

    CSS pairs, chain complexes, lattices, and other structure behind the checks.

    No representation at this rung is recorded for this entry.

  3. R3

    Dynamics

    Ordered measurement schedules and their instantaneous stabilizer groups.

    No representation at this rung is recorded for this entry.

  4. R4

    Circuit & detectors

    Named syndrome-extraction circuits and detector error models.

    No representation at this rung is recorded for this entry.

  5. R5

    Cross-model views

    Executable or illuminating algebraic, ZX, fermionic, tensor, and statistical dictionaries.

    No representation at this rung is recorded for this entry.