Quantum AI Advanced — 080: simulate queue-depth failure modes on `Post-processing inversion checks` — memo `532617 [80]`

Lesson 080: Post-processing inversion checks

Focus

Assume every diagram must map to topology and basis gates—not textbook abstractions alone. Token Post-processing inversion checks:80 keeps neighbouring lessons differentiable.

Key ideas

• Thread: Post-processing inversion checks · drill v10 · spin 707082.
• 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

Simulator-vs-hardware rollup

| Artefact | Honesty check |
|----------|---------------|
| Exact statevector (n<21) | qubit ceiling note |
| Noisy emulation | pauli/channel parity |
| Device trace | leakage / crosstalk tag `med` |

Hypothesis `parity oscillation damping` ties lesson 80 to observables not vibes.

Practice

Practice Attach rollback notes if transpilation swaps exceed a chosen depth ceiling. — 80 Bump literals mindset by 40.