TL;DR: Stim is Google's open-source tool for fast simulation of quantum error correction circuits. It can simulate Clifford circuits (the basis of most QEC schemes) orders of magnitude faster than general-pu
Stim is Google's open-source tool for fast simulation of quantum error correction circuits. It can simulate Clifford circuits (the basis of most QEC schemes) orders of magnitude faster than general-purpose simulators. Stim is the standard tool for developing and testing QEC decoders and was used in Google's Willow below-threshold demonstration.
Type
Quantum error correction simulator
Features
Fast Clifford circuit simulation, QEC decoder development, circuit-level noise modeling
Status
Open source; standard tool for QEC research