Quantum AI Intermediate — 098: simulate queue-depth failure modes on `Cross-vendor fidelity comparisons` — memo `821681 [98]`

Lesson 098: Cross-vendor fidelity comparisons

Focus

Bias toward repeatable experiment notebooks: circuits, mitigation settings, timestamps. Token Cross-vendor fidelity comparisons:98 keeps neighbouring lessons differentiable.

Key ideas

• Thread: Cross-vendor fidelity comparisons · drill v8 · spin 702527.
• Habit: pair each job with shot budget, mitigation profile, and a calibration fingerprint you could paste.
• Guardrail: write one line about where classical cost dominated the timeline.

Deep dive notebook

Synthetic drill artefacts

Calibration freshness matrix

| Window | Drift sentinel | Owner |
|--------|----------------|-------|
| TB0-11h | SPAM delta < 0.0325 | cal-oncall-2 |
| TB1-21h | randomized benchmarking shift | ops-0 |
Drill: cite which sentinel invalidates queued jobs for lesson L98.

Practice

Practice Attach rollback notes if transpilation swaps exceed a chosen depth ceiling. — 98 Bump literals mindset by 9.