Checks before claims
Validation status
Tests span the analytic slab limit, radiation-boundary derivative, complete nonlinear objective gradient, cross-basis identity, vector-field identity, and withheld full-vector spectra.
Reduced-model numerical checks
Centered-emitter symmetry reduction
Even-sector gate: PASS. The scalar reduction is algebraically exact for the centered source and enforced symmetric topology. It does not yet reduce the full-vector staggered-Yee validation solve.
Cross-basis result
| Quantity | Production basis | Richer basis |
|---|---|---|
| Unknowns | 1,701 | 3,025 |
| Initial Q | 15.35329 | 16.25395 |
| Final Q | 33.11581 | 32.80768 |
| Gain | 2.1569× | 2.0184× |
| Initial/final field correlation | 0.983866 / 0.984896 | |
Reduced-model gate: PASS. The same scalar mode improves on both bases. This establishes a basis-stable 2.5D candidate, not a calibrated full-vector Q.
Vector transfer and linewidth checks
3D branch identity
Selected-branch complex vector overlap: 0.997021. Energy-map overlap: 0.998693.
PASS The transferred topology is compared on the same reacquired vector branch.
Current linewidth step
Fit Q improves by 0.1406%; withheld Q improves by 0.1010%.
15/15 pass Controlled-grid only; refinement remains pending.
780 nm full-vector scale-up qualification
| Readiness gate | Result |
|---|---|
| complete exact production gradient | PASS |
| fixed geometry grid and domain converged | PASS |
| restart resources and improving trial | Scope of this decision. Passing authorizes the next higher-resolution/larger-domain atom-coupling optimization. The refinement comparison changes the transverse y spacing while holding x and z spacing fixed, so this is a launch gate—not a full x/y/z device-convergence claim. No rigorous QNM mode volume, Purcell factor, useful-port beta, tweezer-scattering budget, material loss, or fabrication tolerance is established. |