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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.

If you need help with a particular circuit or layout, we can discuss the modelling, simulation or extraction required to answer your question. Start by describing the design, the information available and what you’d like to determine.

We’ll agree the scope and expected outputs before the analysis begins.

Research, examples and product documentation.

Papers and worked examples show how the tools are used and provide a starting point for your own model. The manuals explain the corresponding installation and workflow.

Published applications

Browse the selected research

Documentation and support

Use the manual for your installed version. Customer downloads and support are available through your account.

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