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Generation of a maximally entangled state using collective optical pumping

verification/C051/attempts/R002/claim_report.md

C051 - The steady-state error coefficients shown in Fig. 3a are obtained by fitting the numerica...

Verdict: verified Location: Supp. Mat. S2 Type / expected artifact: numeric / numeric Claim: The steady-state error coefficients shown in Fig. 3a are obtained by fitting the numerical results for p<0.01 and rounding to the nearest integer. Models: extraction claude-opus-4-8; verification gpt-5; verification_chain claude-opus-4-8 -> gpt-5; verdict_chain verified -> verified. Source location(s): source/supp_content.tex:68 (Supp. Mat. S2).

Conclusion

Per-channel steady-state error slopes for all 16 M_{i,j} (optimal params, error after A, 6000-cycle power iteration, p<0.01, rounded to nearest integer): all 9 GLOBAL channels -> 0 (max |slope|<1e-6, matches 'fidelity independent of global errors'); 6 LOCAL channels nonzero: bit/Y locals (I_eX_e, X_eI_e, I_eY_e, Y_eI_e) -> 5 (5.04), phase locals (I_eZ_e, Z_eI_e) -> 4 (3.99). Reproduces the Fig 3a structure (global->0, local->nonzero integers); local bit-flip ~5 consistent with main-text 5.2p (C025). Verified by close match.

Verification details

Executable rerun: run.py exited 0 in 0.566s; log verification/C051/attempts/R002/run.log.

Output excerpt:

baseline error (p=0): 0.000e+00
  M_ij   type    slope    rounded
  IX    local     5.042     5
  IY    local     5.042     5
  IZ    local     3.991     4
  XI    local     5.042     5
  XX    global    0.000     0
  XY    global   -0.000     0
  XZ    global    0.000     0
  YI    local     5.042     5

Supporting files