How to Extract Quantum Parameters From Layouts

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Photonics
+ Photonics
Photonics
+ Photonics

Extract Parameters From EM Results

The workflow requires a superconducting-qubit circuit or resonator layout, an electromagnetic model, appropriate material definitions, and excitation or eigenmode configurations. Run Full EM Analysis with a frequency sweep using the Method of Moments (MoM) or finite element method (FEM) solver to obtain scattering parameters and resonant frequencies. Energy Participation Analysis uses the FEM Eigenmode Solver to calculate qubit and resonator eigenfrequencies from the simulated structure.

Use the resulting electromagnetic data to derive quantum parameters for the modeled circuit. The workflow can be applied to a one-qubit-one-resonator structure or a four-qubit-four-resonator structure, with results obtained from Momentum RF, Momentum Microwave, or FEM Eigenmode analysis. The FEM Eigenmode approach can provide a full chi matrix, while frequency-domain methods provide chi-matrix entries representing interactions between neighboring elements.

Quantum Parameter Extraction Solution

Build the qubit or resonator electromagnetic model, solve it in the frequency domain or eigenmode domain, and extract the resulting quantum parameters. QuantumPro combines electromagnetic modeling with automated quantum parameter extraction in an integrated workflow. Full EM Analysis uses frequency sweeps with Momentum or FEM solvers and derives resonant frequencies and quantum parameters from scattering parameters. Energy Participation Analysis uses the FEM Eigenmode Solver to obtain eigenfrequencies and energy participation ratios for parameter extraction. The workflow supports both compact frequency-domain analysis and eigenmode analysis for larger interacting structures, with the FEM approach providing access to the full chi matrix.
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