# squadds | Levenson-Falk Lab | Knowledge Base | Instagit

A validated design database and simulation workflow software for superconducting quantum hardware

GitHub Stars: 47

Repository: https://github.com/lfl-lab/squadds

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## Articles

### [How to Manage the SQuADDS_DB Instance Using the SingletonMeta Pattern](/lfl-lab/squadds/managing-squadds_db-instance-using-singletonmeta-pattern)

Learn to manage your SQuADDS_DB instance with the SingletonMeta pattern. Ensure centralized state and consistent resource use in your lfl-lab/squadds application.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Access the Measured Device Database and Fabrication Recipes from SQuADDS](/lfl-lab/squadds/accessing-measured-device-database-and-fabrication-recipes-from-squadds)

Access the measured device database and fabrication recipes from SQuADDS using the SQuADDS_DB singleton class. Retrieve experimental data and view recipes easily.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Parallelize Distance Metric Calculations Across Multiple CPU Cores in the SQuADDS Analyzer](/lfl-lab/squadds/parallelizing-distance-metric-calculations-in-squadds-analyzer)

Speed up SQuADDS Analyzer with parallel distance metric calculations. Learn to use ProcessPoolExecutor across CPU cores for near-linear speedup on large datasets.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Select the Optimal Resonator Type (Quarter-Wave vs Half-Wave) for Qubit Applications in SQuADDS](/lfl-lab/squadds/selecting-optimal-resonator-type-for-qubit-applications-in-squadds)

Choose the ideal resonator for your qubit. Learn when to use quarter-wave vs half-wave resonators in SQuADDS for optimal performance and coupling.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Perform Unit Conversion for Hamiltonian Parameters (qubit_frequency_GHz, kappa_kHz, anharmonicity_MHz) in SQuADDS](/lfl-lab/squadds/unit-conversion-for-hamiltonian-parameters-in-squadds)

Learn how to convert Hamiltonian parameters like qubit_frequency_GHz, kappa_kHz, and anharmonicity_MHz in SQuADDS. Discover automatic unit handling for your quantum simulations.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Configure the Palace Electromagnetic Simulator for Resonator Eigenmode Analysis in SQuADDS](/lfl-lab/squadds/configuring-palace-electromagnetic-simulator-for-resonator-analysis)

Learn to configure the Palace electromagnetic simulator within SQuADDS for eigenmode analysis. This guide simplifies the process for accurate resonator simulations.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Extend SQuADDS with Custom Component Types Beyond Built-in Qubits and Cavities](/lfl-lab/squadds/extending-squadds-with-custom-component-types)

Learn to extend SQuADDS with custom component types beyond qubits and cavities. Create new QComponent subclasses and integrate them into your designs easily.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Set Up Qiskit-Metal DesignPlanar for Superconducting Component Simulation in SQuADDS](/lfl-lab/squadds/setting-up-qiskit-metal-designplanar-for-superconducting-component-simulation)

Learn to set up Qiskit-Metal DesignPlanar for superconducting component simulation in SQuADDS. Bridge Qiskit-Metal geometry with Ansys HFSS for robust electromagnetic analysis.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Understand the Relationship Between Geometric Parameters and Hamiltonian Values in SQuADDS](/lfl-lab/squadds/understanding-geometric-parameters-vs-hamiltonian-values-in-squadds)

Unlock the link between geometric parameters and Hamiltonian values in SQuADDS. Learn how capacitances map to energy parameters and coupling for quantum circuit design.

- Tags: deep-dive
- Published: 2026-03-06

### [How to Troubleshoot Ansys Simulation Convergence for High-Frequency Cavity Designs in SQuADDS](/lfl-lab/squadds/troubleshooting-ansys-simulation-convergence-for-high-frequency-cavity-designs)

Troubleshoot Ansys simulation convergence for high-frequency cavity designs in SQuADDS by adjusting key parameters, switching solvers, and monitoring simulation plans for faster, accurate results.

- Tags: how-to-guide
- Published: 2026-03-06

### [Memory Optimization Strategies for Large Qubit-Cavity Merged DataFrames in SQuADDS](/lfl-lab/squadds/memory-optimization-with-large-qubit-cavity-dataframes-in-squadds)

Optimize large qubit-cavity merged DataFrames in SQuADDS. Learn strategies for massive memory reduction including downcasting, categorical conversion, and column extraction.

- Tags: performance
- Published: 2026-03-06

### [How to Contribute Experimentally-Validated Simulation Data to the SQuADDS HuggingFace Dataset](/lfl-lab/squadds/contributing-experimentally-validated-data-to-squadds-huggingface-dataset)

Learn to contribute experimentally-validated simulation data to SQuADDS HuggingFace dataset using the ExistingConfigData API for structured JSON submissions. Enhance the community dataset.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Implement ML Interpolation for Estimating Device Parameters Between Simulated Designs in SQuADDS](/lfl-lab/squadds/implementing-ml-interpolation-for-estimating-device-parameters-in-squadds)

Implement ML interpolation in SQuADDS to estimate device parameters between simulations. Use Interpolator classes to fit surrogate models and predict missing variables, saving time and computation.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Run Parameter Sweeps for Qubit Designs Using the SQuADDS AnsysSimulator](/lfl-lab/squadds/running-parameter-sweeps-for-qubit-designs-using-squadds-ansyssimulator)

Automate qubit design parameter sweeps with SQuADDS AnsysSimulator. Easily simulate designs, extract QSweep parameters, and aggregate results for efficient analysis.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Add Airbridges to Superconducting Qubit Chip Designs Using SQuADDS](/lfl-lab/squadds/adding-airbridges-to-superconducting-qubit-chip-designs-in-squadds)

Learn to add airbridges to superconducting qubit chip designs with SQuADDS. Our AirbridgeGenerator utility automates placement and validates your layout for efficient design.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Generate GDS Layout Files from SQuADDS Design Options for Fabrication](/lfl-lab/squadds/generating-gds-layout-files-from-squadds-design-options)

Learn to generate GDS layout files from SQuADDS Python designs. This guide details using component-specific to_gds methods and the built-in GDS renderer for fabrication-ready files.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Use Euclidean, Manhattan, Chebyshev, and Weighted Distance Metrics in SQuADDS Analyzer](/lfl-lab/squadds/using-distance-metrics-in-squadds-analyzer-find_closest)

Learn to use Euclidean Manhattan Chebyshev and Weighted distance metrics in SQuADDS Analyzer's find_closest function Configure custom metrics for advanced analysis.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Compute Qubit-Resonator Coupling Strength (g_MHz) in SQuADDS](/lfl-lab/squadds/compute-g_mhz-in-cavity-coupled-hamiltonian-using-squadds)

Learn how to compute qubit-resonator coupling strength g_MHz in SQuADDS using the g_from_cap_matrix method. Derive g from physical capacitances and resonator parameters.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Load Capacitance Matrix Data for TransmonCross Qubits from the SQuADDS Database](/lfl-lab/squadds/loading-capacitance-matrix-data-for-transmoncross-qubits-from-squadds-database)

Learn to load capacitance matrix data for TransmonCross qubits from the SQuADDS database with the load_hf_dataset helper. Easily access and filter qubit capacitance for your research.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Create Multi-Component Systems with Qubits, Cavity_Claw, and Couplers in SQuADDS](/lfl-lab/squadds/creating-multi-component-systems-with-qubits-cavity_claw-and-couplers-in-squadds)

Learn to build multi-component systems with qubits, cavity_claw, and couplers in SQuADDS. Connect transmon qubits, waveguides, and couplers using Qiskit Metal's interface.

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Configure Ansys Eigenmode Simulation Settings for Superconducting Qubit Designs in SQuADDS](/lfl-lab/squadds/configuring-ansys-eigenmode-simulation-settings-for-superconducting-qubit-designs-in-squadds)

Learn how to configure Ansys eigenmode simulation settings for superconducting qubit designs in SQuADDS using default options custom parameters or persistent setup updates

- Tags: how-to-guide
- Published: 2026-03-06

### [How to Find the Closest Qubit Design Matching Target Hamiltonian Parameters Using SQuADDS Analyzer](/lfl-lab/squadds/how-to-find-closest-qubit-design-matching-target-hamiltonian-parameters-using-squadds-analyzer)

Find the closest qubit design matching target Hamiltonian parameters with SQuADDS Analyzer. Compute distance metrics and retrieve top N matching geometries from our simulated circuit database.

- Tags: how-to-guide
- Published: 2026-03-06