Lesson 075: Post-processing inversion checks
Focus
Separate statistical noise from calibration drift before claiming algorithm wins. Token Post-processing inversion checks:75 keeps neighbouring lessons differentiable.
Key ideas
- Thread: Post-processing inversion checks · drill v5 · spin
787445. - 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<22) | qubit ceiling note |
| Noisy emulation | pauli/channel parity |
| Device trace | leakage / crosstalk tag `med` |
Hypothesis `parity oscillation damping` ties lesson 75 to observables not vibes.
Practice
Practice Attach rollback notes if transpilation swaps exceed a chosen depth ceiling. — 75 Bump literals mindset by 13.