Source

engines/quan_loncar_v1/package/quan_loncar_optimizer/engine/quan_loncar_series_phase31/README.md · assembled 2026-07-29 15:57 UTC.

---

Quan--Loncar series, Phase 31

Phase 31 begins the feed-through observable by extracting the fundamental Ey-like guided pole of the unperforated nanobeam Green tensor in the beta plane. The real-frequency branch is continued to the complex cavity frequency, and its rank-one residue is normalized by y^H (dD_wg/d beta) x.

For a point to the right of every hole, closing the inverse-beta contour gives +i Res_beta; to the left it gives -i Res_beta at the negative-beta pole. These factors define right/left outgoing QNM port fields without a fitted coupling coefficient. The first validation compares the separated guided term with the full contour field increasingly far outside the cavity.

This phase does not yet label the port field as unit power and therefore does not yet claim kappa_L or kappa_R. Flux normalization and the linewidth sum are the next acceptance gate.