StimCircuits

StimCircuits

This package is essentially a translation (from C++ to Python) of some of the code for generating example circuits included in Stim. It currently only supports surface code circuits, so is essentially a translation of this Stim file, but with a few additional features. This Python implementation is useful for making modifications to the example circuits, without needing to use the Stim C++ API.

To install the package, run pip install -e . in the root directory. The stimcircuits.generate_circuit method can then be used to generate circuits, and takes the same arguments as the stim.Circuit.generated method (but currently only supports surface code circuits). stimcircuits.generate_circuit also includes the additional argument exclude_other_basis_detectors which, if set to True, removes the detectors in the opposite basis to that of the measured logical observable. This can be useful for running simulations with decoders (such as minimum-weight perfect matching and union-find) that ignore hyperedge fault mechanisms in the detector error model, as the detectors in the opposite basis are not relevant to the decoding problem, but increase the size of the matching graph generated automatically by stim. stimcircuits.generate_circuit can also generate toric code circuits, which are not provided as example circuits in Stim.