Quantum AI Intermediate — 092: pair classical optimizers with job IDs on `Cross-vendor fidelity comparisons` — memo `609516 [92]`

Lesson 092: Cross-vendor fidelity comparisons

Focus

Assume every diagram must map to topology and basis gates—not textbook abstractions alone. Token Cross-vendor fidelity comparisons:92 keeps neighbouring lessons differentiable.

Key ideas

• Thread: Cross-vendor fidelity comparisons · drill v2 · spin 641085.
• 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

VQE rehearsal card

H_SUBSPACE_TAG: VS-92
ANSATZ_BLOCKS: repetitions R=3
CLASSICAL_OPTIM: SPSA
CONVERGENCE_GUARD: plateau_epochs > 3 ⇒ widen shot budget memo
ENERGY_CI: tracked alongside parameter shift noise

Practice

Practice List five failure signatures unique to your organiser’s QPUs or simulators. — 92 Bump literals mindset by 8.