Day 9 — Papers 02 & 03
Debrief
Fill this in the evening of Wed Sep 16, while grading is still fresh. It feeds Day 11, which is built entirely from what you write here and on Days 10 and 12.
Scores
| Paper | Score /34 | % | Pass (24)? | Time used |
|---|---|---|---|---|
| Paper 02 | /45 min | |||
| Paper 03 | /45 min |
Misses by section
Count every wrong answer — and every right answer you were not sure of — against the section it came from.
| § | Section | Wrong | Unsure |
|---|---|---|---|
| 1 | Create quantum circuits (18%) | ||
| 2 | Perform quantum operations (16%) | ||
| 3 | Run quantum circuits (15%) | ||
| 4 | Sampler primitive (12%) | ||
| 5 | Estimator primitive (12%) | ||
| 6 | Visualization (11%) | ||
| 7 | Retrieve and analyze results (10%) | ||
| 8 | OpenQASM (6%) |
Miss log
One row per wrong answer. The third column is the one that matters.
| Q | What the answer was | Why my answer looked right |
|---|---|---|
Trap check
Tick any that caused a miss today. These are the repeat offenders across the whole course — a tick here twice in one week means it goes on Day 11.
- Little-endian bit ordering (counts keys, Pauli labels, qubit indices)
- Sampler needs measurements; Estimator must not have them
- Observables need
apply_layoutafter transpilation - Primitives require ISA circuits — untranspiled circuits are rejected
-
resilience_levelis Estimator-only -
data.<creg>naming — the attribute is the classical register's name - Suppression (DD, twirling) vs mitigation (ZNE, TREX, PEC)
- Optimization level semantics (0–3)
- Job vs batch vs session
- Entangled state ⇒
plot_bloch_multivectorshows a zero vector
Top 3 weak topics
Carried to Day 11. Be specific — "Estimator" is not a topic, "ZNE
noise_factors vs extrapolator" is.
Tomorrow's adjustment
Day 10 as planned (Papers 04 and 05), or morning swapped for a question-bank redo? Write the decision and the reason.