GraphDecoder¶

class GraphDecoder(code, S=None)[source]¶

Bases: object

Class to construct the graph corresponding to the possible syndromes of a quantum error correction code, and then run suitable decoders.

Parameters

code (RepitionCode) – The QEC Code object for which this decoder will be used.
S (retworkx.PyGraph) – Graph describing connectivity between syndrome elements. Will be generated automatically if not supplied.

Additional information:: The decoder for the supplied code is initialized by running _make_syndrome_graph(). Since this process can take some time, it is also possible to load in a premade S. However, if this was created for a differently defined code, it won’t work properly.

Methods

`get_error_probs`	Generate probabilities of single error events from result counts.
`get_logical_prob`	param results A results dictionary, as produced by the
`make_error_graph`	param string A string describing the output from the code.
`matching`	param string A string describing the output from the code.
`weight_syndrome_graph`	Generate weighted syndrome graph from result counts.