Debrief

Fill this in the evening of Thu Sep 17. Together with Day 9 and Day 12 it is the entire input to Day 11.

---

Scores

Trend so far — Paper 01 (Day 8): ___ · 02: ___ · 03: ___ · 04: ___ · 05: ___

Misses by section

Count every wrong answer — and every right answer you were not sure of — against the section it came from.

Miss log

One row per wrong answer. The third column is the one that matters.

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_layout after transpilation
• Primitives require ISA circuits — untranspiled circuits are rejected
• resilience_level is 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_multivector shows a zero vector

Top 3 weak topics

Be specific — "Estimator" is not a topic, "ZNE noise_factors vs extrapolator" is.

Day 11 list

Day 11 has no new papers. Write here the three question banks you will redo and the two cheatsheet sections you will re-read. Decide it now, while the evidence is in front of you — not tomorrow morning when it is easy to pick the topics you enjoy.

• Question banks to redo:
• Cheatsheet sections to re-read: