stim

A library for analyzing Quantum Error Correction Codes from their Tanner Graphs.

Frontier decoder for quantum LDPC codes: pruned dynamic programming over boundary states for approximate logical maximum-likelihood decoding of sparse parity-check and detector-error-model matrices.

Stim wrapper for simulations of surface code experiments

The quantum substrate of the Neura Parse stack — one IR across gate, neutral-atom, photonic-CV and pulse modalities; fault-tolerant promotion (surface · BB qLDPC · Gidney–Shutty cultivation); AI-augmented compilation; ed25519-signed manifests with offline-verifiable hash chains.

Tesseract quantum error correction code and Stim simulations

Firmware + other software useful for using our custom StimSync Device

Useful tools for QEC simulation with Stim

RustQEC: a Rust workspace for quantum error correction simulation, decoding, and reproducible benchmarks.

First version of social 2-step task with shocks.

Production-grade Rust/Python quantum error correction decoder. 25+ decoder families: MWPM Blossom, Union-Find, BP-OSD, LDPC/qLDPC, belief-matching, CUDA/GPU batch decoding, AutoDecoder 7-tier fallback. PyMatching/Stim/Sinter compatible. Ed25519 license verification. Benchmark evidence included.

Geometric diagnostics for quantum error correction: A0/A1 topological classification of decoding error patterns + closed-form fault-tolerance thresholds

Noise model replicating ytterbium atom qubits on Clifford circuits.

Modular quantum error correction benchmarking framework featuring Stim-based surface-code simulation, detector error models, MWPM decoding, Monte Carlo threshold analysis, and reference implementations in Qiskit and a first-principles checkerboard surface code.

Quantum DEMSpecBench: reproducible DEM/Sinter conformance benchmark specification and wiki

Circuit-level surface code Monte Carlo simulation with syndrome extraction, logical-failure tracking and threshold analysis.

Cloud-distributed Monte Carlo sampling for quantum error correction. Partitions Stim circuits across SkyPilot-managed spot instances, each running unmodified sinter collect, then merges results via sinter combine.

Quantum error-correction research code exploring automorphism-based fault-tolerant logical gate constructions and intermediate code symmetries.

Vendor-portable GPU decoders for quantum LDPC codes — Triton min-sum BP & Relay-BP on NVIDIA (CUDA), AMD (ROCm), and Apple-silicon (Metal), consuming any stim DetectorErrorModel.

Simulation reproduction of Google Quantum AI's 2023 surface-code scaling experiment, compared against published logical error rates.