SOFT

a high-performance parallel SimulatOr for universal Fault-Tolerant quantum circuits

Instructions

You can find instructions for building and running SOFT in Instructions.md.

Paper

For the first version of SOFT paper, see:

Li, Riling, et al. “SOFT: A High-Performance Simulator for Universal Fault-Tolerant Quantum Circuits.” *arXiv*, 2025, arXiv:2512.23037.

One thing to note

We are developing SOFT v2, which is expected to deliver at least a $3\times$ speedup over the first version.

Feel free to ask us ANY questions on the issue tracker — we'd be happy to answer them.