Q3D Extractor Analysis

Q3D Analysis Tutorial

Q3D analysis belongs after HFSS in the documentation because it explains how a quantum chip layout is converted into electrical interaction values. Q3D helps analyze capacitance, coupling, electric field strength, and unwanted interaction before fabrication.

Q3D tutorial image: AEDT interface showing geometry, fields, and extraction workflow.

1. Quantum chip layout: start from qubits, resonators, readout lines,

   control lines, and ground plane.

2. Import into AEDT: bring the geometry into ANSYS Electronics Desktop.

3. Open Q3D Extractor: analyze electrical interactions between physical

   structures.

4. Assign materials: apply aluminum, silicon, sapphire, niobium, or

   project-specific materials.

5. Generate mesh: divide the structure into small elements for calculation

   accuracy.

6. Calculate fields: inspect electric field strength, direction, and energy

   concentration.

7. Extract capacitance matrix: convert physical geometry into electrical

   information.

   Input layout: qubits, readout lines, control lines, and ground plane.

   Capacitance matrix: diagonal values are self-capacitance; off-diagonal values show component interaction.

How to explain color fields

Red or yellow means strong electric field, green means medium field, and blue means weak

field.