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Eight-junction pulse propagation, plotted from actual JoSIM®-Pro simulation data.
Voltage pulse propagating through four generic transmission cells containing eight Josephson junctions; actual JoSIM®-Pro simulation data.

JoSIM®-Pro simulation of pulse propagation through an eight-junction circuit. The traces show the input, midpoint and output around the first propagated pulse.

Software for designing superconducting and quantum electronics.

SUN Magnetics develops software for extracting electrical parameters from physical layouts and simulating the behaviour of superconducting circuits. Alongside these tools, we provide engineering support for modelling and analysis.

Original paired-spiral demonstration layout in the native Studio GDSII viewport, with two conductor layers.

A two-layer paired-spiral demonstration layout in the InductEx® Studio GDSII workspace.

Relating layout geometry to electrical behaviour.

Inductance and coupling depend on the conductor geometry and the process stack. InductEx® uses this physical information to extract circuit parameters, while Studio provides a workspace for inspecting the model and its results.

Actual simulated load voltage for matched and open generic transmission-line terminations, showing a two-picosecond flight time.

Simulated responses of matched and open loads on a generic 4 Ω lossless transmission line.

Simulating signals in superconducting circuits.

JoSIM®-Pro models the time-domain response of circuits containing Josephson junctions, sources, transmission lines and loads. By changing the circuit parameters, you can examine switching events, signal propagation and the effect of bias and termination choices.

DGP chip on its carrier immediately after removal from liquid helium.

Engineering support for your design.

For assistance with a specific circuit or layout, we can help identify the modelling, simulation, or extraction methods required to address your questions. Simply describe your design, the information available, and what you would like to investigate.

Research, examples and product documentation.

Papers and worked examples demonstrate how the tools are used and provide a starting point for developing your own models. Product manuals cover installation procedures and workflows and are organised by product and version.

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Published applications

Explore more published research using our tools

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Documentation and support

Explore our knowledge base for setup instructions, worked examples, and troubleshooting guidance for InductEx® and JoSIM®-Pro.

For additional downloads and technical support, customers can sign in to their accounts.

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