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Update PadDynamicalDecoupling pass to conform to Qiskit 1.3 data model #2047

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Merged
kt474 merged 2 commits into from
Nov 20, 2024
Merged

Update PadDynamicalDecoupling pass to conform to Qiskit 1.3 data model #2047

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5e64a9a
Update PadDynamicalDecoupling pass to conform to 1.3 data model restr…
ElePT Nov 20, 2024
11ee8ba
Simplify solution. Property set is only accessed for prev_node.
ElePT Nov 20, 2024
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9 changes: 7 additions & 2 deletions qiskit_ibm_runtime/transpiler/passes/scheduling/dynamical_decoupling.py
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Original file line number Diff line number Diff line change
Expand Up @@ -493,14 +493,19 @@ def _pad(
op = next_node.op
theta_r, phi_r, lam_r = op.params
op.params = Optimize1qGates.compose_u3(theta_r, phi_r, lam_r, theta, phi, lam)
next_node.op = op
self._block_dag.substitute_node(next_node, op, propagate_condition=False)
sequence_gphase += phase
elif isinstance(prev_node, DAGOpNode) and isinstance(prev_node.op, (UGate, U3Gate)):
# Absorb the inverse into the predecessor (from right in circuit)
op = prev_node.op
theta_l, phi_l, lam_l = op.params
op.params = Optimize1qGates.compose_u3(theta, phi, lam, theta_l, phi_l, lam_l)
prev_node.op = op
new_prev_node = self._block_dag.substitute_node(
prev_node, op, propagate_condition=False
)
start_time = self.property_set["node_start_time"].pop(prev_node)
if start_time is not None:
self.property_set["node_start_time"][new_prev_node] = start_time
sequence_gphase += phase
else:
# Don't do anything if there's no single-qubit gate to absorb the inverse
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