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Add clifford gates to collect_cliffords (backport #12750) #12763

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Jul 11, 2024
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Add clifford gates to collect_cliffords (backport #12750) #12763

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edc742c
Add clifford gates to collect_cliffords (#12750)
ShellyGarion Jul 11, 2024
0743a9c
Update utils.py
ElePT Jul 11, 2024
f03db42
Update utils.py
ElePT Jul 11, 2024
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21 changes: 6 additions & 15 deletions qiskit/transpiler/passes/optimization/collect_cliffords.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
)

from qiskit.quantum_info.operators import Clifford
from qiskit.quantum_info.operators.symplectic.clifford_circuits import _BASIS_1Q, _BASIS_2Q


class CollectCliffords(CollectAndCollapse):
Expand Down Expand Up @@ -69,21 +70,11 @@ def __init__(
)


clifford_gate_names = [
"x",
"y",
"z",
"h",
"s",
"sdg",
"cx",
"cy",
"cz",
"swap",
"clifford",
"linear_function",
"pauli",
]
clifford_gate_names = (
list(_BASIS_1Q.keys())
+ list(_BASIS_2Q.keys())
+ ["clifford", "linear_function", "pauli", "permutation"]
)


def _is_clifford_gate(node):
Expand Down
6 changes: 6 additions & 0 deletions releasenotes/notes/fix-collect-clifford-83af26d98b8c69e8.yaml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
---
fixes:
- |
Add more Clifford gates to the :class:`.CollectCliffords()` transpiler pass.
In particular, we have added the gates :class:`ECRGate()`, :class:`DCXGate()`,
:class:`iSWAPGate()`, :class:`SXGate()` and :class:`SXdgGate()` to this transpiler pass.
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