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Phase 3 State/Layout DLA Manifest

Date: 2026-05-07 Backend: ibm_marrakesh Jobs: ibm-run-aabcf620230b1438, ibm-run-eea172711aa52b78 Raw-count SHA256: 03068ddaa9794f1ac19614e700887a84dd013cd5af107f49b39c3cff9e5674ac

Scope

This analysis uses the committed Phase 3 state/layout raw-count artefact only. It separates state, excitation-count, and physical-layout effects for the n=4 DLA parity programme.

Readiness

  • Circuits: 495
  • Max transpiled depth: 294
  • Max total gates: 762

Comparison Summary

  • excitation_inversion_E0_minus_O3: mean difference -0.000524, signs +/−/0 = 5/7/0, Fisher p 1.274304e-26
  • original_E0_minus_O0: mean difference 0.006312, signs +/−/0 = 6/6/0, Fisher p 9.772757e-57
  • within_even_E0_minus_E1: mean difference -0.005872, signs +/−/0 = 2/10/0, Fisher p 2.522756e-59
  • within_odd_O0_minus_O1: mean difference 0.009191, signs +/−/0 = 7/5/0, Fisher p 1.398605e-27

Decision Flags

  • layout_spread_exceeds_mean_original_contrast: True
  • original_contrast_mixed_sign: True
  • within_sector_controls_significant: True

Artefacts

  • data/phase3_state_layout_dla/phase3_state_layout_summary_2026-05-07.json SHA256 170c5883574b4ea95adb173187120e94c5d755f072b289301d2a4c2c03c748fa
  • data/phase3_state_layout_dla/phase3_state_layout_row_metrics_2026-05-07.csv SHA256 033556dad102de0703993350d1a101bdf3503e10d5773c4ba8789a9512e9f7df
  • data/phase3_state_layout_dla/phase3_state_layout_layout_metrics_2026-05-07.csv SHA256 6705de9976698d534437f4c82742c10013eb64e055cd2ba9d0dae0ddbaf60a31
  • data/phase3_state_layout_dla/phase3_state_layout_readout_metrics_2026-05-07.csv SHA256 fd16fb4eaa802a2ccb0b302936ef3574570734c66028184108d575bbc7784450

Claim Boundary

Supported: - mechanism-separation evidence for this backend and calibration window - state-level, depth-level, and layout-level parity-leakage summaries - whether layout/state spread is comparable to the original contrast

Blocked: - DLA-parity-only causality - backend-universal protection - monotone scaling - quantum advantage - full 16-state confusion-matrix mitigation from the five-state readout block

Reproduction

python scripts/analyse_phase3_state_layout_dla.py