Lesson 122: Shot noise vs decoherence slicing
Focus
Prefer falsifiable hypotheses (shot count, fidelity floor) over buzzword proofs-of-concepts. Token Shot noise vs decoherence slicing:122 keeps neighbouring lessons differentiable.
Key ideas
- Thread: Shot noise vs decoherence slicing · drill v2 · spin
300219. - 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<19) | qubit ceiling note |
| Noisy emulation | pauli/channel parity |
| Device trace | leakage / crosstalk tag `low` |
Hypothesis `parity oscillation damping` ties lesson 122 to observables not vibes.
Practice
Practice List five failure signatures unique to your organiser’s QPUs or simulators. — 122 Bump literals mindset by 22.