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.
        
#. **Quantum chip layout:** start from qubits, resonators, readout lines,
          control lines, and ground plane.
#. **Import into AEDT:** bring the geometry into ANSYS Electronics Desktop.
#. **Open Q3D Extractor:** analyze electrical interactions between physical
          structures.
#. **Assign materials:** apply aluminum, silicon, sapphire, niobium, or
          project-specific materials.
#. **Generate mesh:** divide the structure into small elements for calculation
          accuracy.
#. **Calculate fields:** inspect electric field strength, direction, and energy
          concentration.
#. **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.