Technical Reference

API reference for qector_decoder_v3 1.0.0 package: stable and experimental decoders, utilities, and helper functions. v1.0.0 is the first stable release.

Stable decoders

UnionFindDecoder, FastUnionFindDecoder, BlossomDecoder, SparseBlossomDecoder, BeliefMatching, BpOsdDecoder, BatchDecoder, CPUBatchDecoder, CUDABatchDecoder, OpenCLBatchDecoder, AutoDecoder (7-tier fallback), DecoderPool, get_decoder, clear_decoder_cache, decode_mmap, DecodeResult, decode_with_diagnostics, Workbench.

Experimental / research decoders

HybridDecoder, HybridCascadeDecoder (full-feature / source build; public wheels may raise unavailable), PredecodedDecoder, ColourCodeDecoder, TwoStageDecoder, AmbiguityClusterDecoder, DecoderPool, LERBenchmark.

Utilities & integration

stim_compat.from_stim_detector_error_model, sinter_compat.qector_sinter_decoders (registered entry points), qiskit_plugin, pymatching shim (from qector_decoder_v3.pymatching import Matching), codes helpers, license.verify_license_token, run_mcp_server, qector decode / bench / serve CLI, qector-doctor.

from qector_decoder_v3 import UnionFindDecoder, BlossomDecoder
from qector_decoder_v3.stim_compat import from_stim_detector_error_model