---
license: mit
configs:
- config_name: qubit-TransmonCross-cap_matrix
  data_files:
  - split: train
    path: "qubit-TransmonCross-cap_matrix.json"
- config_name: cavity_claw-RouteMeander-eigenmode
  data_files:
  - split: train
    path: "cavity_claw-RouteMeander-eigenmode.json"
- config_name: coupler-NCap-cap_matrix
  data_files:
  - split: train
    path: "coupler-NCap-cap_matrix.json"
- config_name: coupler-CapNInterdigitalTee-cap_matrix
  data_files:
  - split: train
    path: "coupler-CapNInterdigitalTee-cap_matrix.json"
- config_name: coupler-GeneralizedCapNInterdigital-cap_matrix
  data_files:
  - split: train
    path: "coupler-GeneralizedCapNInterdigital-cap_matrix.json"
- config_name: measured_device_database
  data_files: "measured_device_database.json"
tags:
- quantum
- superconducting
- qiskit-metal
- qiskit
- ibm
- qubit
- transmon
- design
- device
- quantum-computing
- quantum-hardware
pretty_name: SQuADDS_DB
size_categories:
- 10K<n<100K
---

<center>
  <img src="https://github.com/LFL-Lab/SQuADDS/blob/master/docs/_static/images/squadds_logo_dark_name.png?raw=true" width="80%" alt="SQuADDS Logo" /> <!-- This will stretch the logo to the full container width -->
</center>

# SQuADDS_DB - a Superconducting Qubit And Device Design and Simulation Database

The SQuADDS (Superconducting Qubit And Device Design and Simulation) Database Project is an open-source resource aimed at advancing research in superconducting quantum device designs. It provides a robust workflow for generating and simulating superconducting quantum device designs, facilitating the accurate prediction of Hamiltonian parameters across a wide range of design geometries.

- **Homepage:** [https://lfl-lab.github.io/SQuADDS/](https://lfl-lab.github.io/SQuADDS/)
- **Repository:** [https://github.com/lfl-lab/SQuADDS](https://github.com/lfl-lab/SQuADDS)
- **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
  @article{Shanto2024squaddsvalidated,
    doi = {10.22331/q-2024-09-09-1465},
    url = {https://doi.org/10.22331/q-2024-09-09-1465},
    title = {{SQ}u{ADDS}: {A} validated design database and simulation workflow for superconducting qubit design},
    author = {Shanto, Sadman and Kuo, Andre and Miyamoto, Clark and Zhang, Haimeng and Maurya, Vivek and Vlachos, Evangelos and Hecht, Malida and Shum, Chung Wa and Levenson-Falk, Eli},
    journal = {{Quantum}},
    issn = {2521-327X},
    publisher = {{Verein zur F{\"{o}}rderung des Open Access Publizierens in den Quantenwissenschaften}},
    volume = {8},
    pages = {1465},
    month = sep,
    year = {2024}
  }
```

---

### Licensing Information

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.