Add 16,379 generalized interdigital Q3D simulations

README.md

@@ -37,7 +37,7 @@ tags:
 - quantum-hardware
 pretty_name: SQuADDS_DB
 size_categories:
-- 1K<n<10K
+- 10K<n<100K
 ---
 
 <center>
@@ -53,6 +53,20 @@ The SQuADDS (Superconducting Qubit And Device Design and Simulation) Database Pr
 - **Paper:** [https://arxiv.org/pdf/2312.13483.pdf](https://arxiv.org/pdf/2312.13483.pdf)
 - **Point of Contact:** [Sadman Ahmed Shanto](mailto:shanto@usc.edu)
 
+## Generalized Interdigital Capacitor Sweep
+
+`coupler-GeneralizedCapNInterdigital-cap_matrix` contains 20,062 Q3D
+capacitance-matrix simulations for `GeneralizedCapNInterdigital`, contributed
+by **Saikat Das** of the Levenson-Falk Lab at USC. The canonical terminal names
+are `north` and `south`; legacy `top` and `bottom` fields are retained as
+compatibility aliases.
+
+The imported `q3d_cap` campaign stores its converged Maxwell matrix in CSV as
+pF. SQuADDS converts the final adaptive pass to fF (multiply by 1,000), retains
+the physical negative off-diagonal Maxwell entries, and exposes positive
+pairwise magnitudes such as `north_to_south` in the public result fields. This
+matches the unit and sign conventions used by the rest of SQuADDS_DB.
+
 If you use SQuADDS in your research, please cite the following paper:
 
 ```bibtex

coupler-GeneralizedCapNInterdigital-cap_matrix.json

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