Limits RegistryPUBLIC RECORDLimits RegistryResearch Console →Ideal entangled N-probe estimation can scale no better than inverse total coherent resource number.
The question, scope, and sources behind this Registry record.
Lower-bound locally unbiased phase-estimation error using N coherently entangled probes repeated nu times under a unit-normalized generator.
Current frontiers derived from accepted Claims.
Assertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.
Limits Registry. LR-003319. Heisenberg quantum-metrology scaling limit. 2026.