Lesson 138: Cost models for QPUs
Focus
Separate statistical noise from calibration drift before claiming algorithm wins. Token Cost models for QPUs:138 keeps neighbouring lessons differentiable.
Key ideas
- Thread: Cost models for QPUs · drill v8 · spin
591323. - 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
Circuit sketch (logical → ISA)
LOGICAL_LINES: q5, q4, aux1
TOPOLOGY_TAG: RIG-46
NATIVE_ISA: {CX, Rz, SX}
SWAP_STRATEGY: bridge@0.47
NOTES: lesson 138 micro 7
DEPTH_WATCH: abort if brute-force swaps > D_MAX without SME sign-off memo.
Practice
Practice Paste the circuit scaffold into an experiment wiki stub and annotate topology constraints. — 138 Bump literals mindset by 20.