PropagateLocalPauliNode

class samplomatic.samplex.nodes.PropagateLocalPauliNode(op_name: str, register_name: str, subsystem_idxs: Sequence[Sequence[int]], *, lookup_table: ndarray | None = None)

Bases: EvaluationNode

A node that propagates a Pauli register past a gate.

Only Paulis from the commutant of the gate generators (those that commute with the gate for any angle) are allowed through. Non-commutant Paulis trigger a runtime error.

Parameters:

• register_name – The name of the Pauli register to propagate.

• subsystem_idxs – The subsystems in the register specified as a 2D array where the left-most axes is over subsystems and the right-most axes is over indices in the subsystem.

• op_name – The name of the gate operation.

Attributes Summary

outgoing_register_type

The virtual gate type of outgoing registers.

Methods Summary

evaluate(registers, *_)	Evaluate this node.
get_style()	Return the style of this node when plotted.
reads_from()	Return a manifest of which virtual register values this node needs to read from.
writes_to()	Return a manifest of which virtual register values this node needs to write to.

Attributes Documentation

outgoing_register_type

Methods Documentation

evaluate(registers, *_)

Evaluate this node.

Parameters:

• registers – At least those registers needed by this node to read from or write to.

• parameter_values – Parameter values to use during evaluation.

Raises:

SamplexRuntimeError – If the number of parameter values received does not equal the number required by this node.

get_style()

Return the style of this node when plotted.

reads_from()

Return a manifest of which virtual register values this node needs to read from.

writes_to()

Return a manifest of which virtual register values this node needs to write to.