loom.interpreter.applicator.measure_block_syndromes

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loom.interpreter.applicator.measure_block_syndromes.measureblocksyndromes(interpretation_step, operation, same_timeslice, debug_mode)[source]

Measure the syndromes of all stabilizers in a block.

The algorithm is the following: - A.) Begin MeasureBlockSyndromes composite operation session

  • B.) Get stabilizers and syndrome circuit templates from the block

    • B.1) Get the stabilizers from the block

    • B.2) Get the stabilizer circuit templates from the block

  • C.) Resolve circuits with actual channels (quantum and classical)

    • C.1) Find the channels for the qubits (create them if they don’t exist) and keep track of these in the right order

    • C.2) Get the classical bit labels from the syndrome circuit

  • D.) For each cycle:

    • D.1) Create classical channels and measurement records

    • D.2) Clone syndrome circuits and remap channels

    • D.3) Weave circuits together into a single time slice

      • NOTE: We currently assume that the circuits are constructed in order, this is the responsibility of the user

    • D.4) Append woven circuit to interpretation step

    • D.5) Generate new syndromes for the stabilizers

    • D.6) Create new detectors for the syndromes

    • D.7) Update interpretation step with syndromes and detectors

  • E.) End MeasureBlockSyndromes composite operation session and append circuit

Parameters:

  • interpretation_step (InterpretationStep) – Interpretation step containing the block from which the syndrome should be measured.

  • operation (MeasureBlockSyndromes) – Syndrome measurement operation description.

  • same_timeslice (bool) – Flag indicating whether the operation is part of the same timestep as the previous operation.

  • debug_mode (bool) – Flag indicating whether the interpretation should be done in debug mode. Activating debug mode will enable commutation validation for Block.

Returns:

Interpretation step after the syndrome measurement operation.

Return type:

InterpretationStep