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Generation of a maximally entangled state using collective optical pumping

verification/C038/attempts/R002/claim_report.md

C038 - Fig. 3c: experimentally measured F(|Psi^->) agrees qualitatively with the correlated bit-...

Verdict: data_unavailable (data_unavailable) Location: Fig. 3c Type / expected artifact: plot / figure (errors_bit_flip.pdf) Claim: Fig. 3c: experimentally measured F(|Psi^->) agrees qualitatively with the correlated bit-flip model prediction 1 - 3.2 p, with p from independent measurements. Models: extraction claude-opus-4-8; verification gpt-5; verification_chain claude-opus-4-8 -> gpt-5; verdict_chain data_unavailable -> data_unavailable. Limitations: data_unavailable. Source location(s): source/main.tex:156-157 (Fig. 3c).

Conclusion

Fig 3c compares MEASURED F(|Psi->) against the 1-3.2p correlated bit-flip model. The model line is reproducible (coefficient 3.2 confirmed ~3.07 in C028), but the measured (p,F) data points are unavailable (inventory.json: no data/code link), so the claimed qualitative agreement cannot be verified. Lower of the two -> data_unavailable.

Verification details

Executable rerun: run.py exited 0 in 0.665s; log verification/C038/attempts/R002/run.log.

Output excerpt:

Reproducible model line F = 1 - 3.2 p (correlated bit-flip).
  at p=0.02: F=0.936 (paper: 16-cycle error 0.07(1) at p~0.02 -> F~0.93)
MEASURED (p,F) data points are unavailable -> claim of qualitative agreement not reproducible.
wrote figure.png (model line only, no measured data points)

Plot evidence: C038 paper figure C038 reproduced or diagnostic figure

Visual comparison notes: - Fig 3c overlays MEASURED F(|Psi->) (blue dots, with independently measured bit-flip probability p) against the correlated bit-flip model prediction 1-3.2p. The 1-3.2p model LINE is reproducible (the 3.2 coefficient is confirmed numerically, ~3.07, in C028), but the measured (p,F) data points are not available (inventory.json: no data/code link), so the qualitative-agreement claim cannot be verified. - The reproduced figure.png shows only the reproducible 1-3.2p model line; the experimental data points are absent. - No reproduction of the measured data points was possible -> data unavailable (the limiting factor; the model line alone cannot establish the claimed data-model agreement). - Round-2 verifier reran the self-contained script where present and audited the modeled quantity; no new raw paper data was available.

Supporting files