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Sorts gate array to have deterministic gate selection #16139

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0728f4d
sorts gate array to have deterministic gate selection
amruthpremjith May 5, 2026
d6e6757
Merge branch 'main' into random-cliff-array-sort
amruthpremjith May 5, 2026
dd53239
changes array return and add test case
amruthpremjith May 5, 2026
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4 changes: 2 additions & 2 deletions qiskit/circuit/random/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -708,8 +708,8 @@ def random_clifford_circuit(num_qubits, num_gates, gates="all", seed=None):
QuantumCircuit: constructed circuit
"""

gates_1q = list(set(_BASIS_1Q.keys()) - {"v", "w", "id", "iden", "sinv"})
gates_2q = list(_BASIS_2Q.keys())
gates_1q = [gate for gate in _BASIS_1Q if gate not in {"v", "w", "id", "iden", "sinv"}]
gates_2q= list(_BASIS_2Q.keys())

if gates == "all":
if num_qubits == 1:
Expand Down
25 changes: 25 additions & 0 deletions test/python/quantum_info/operators/symplectic/test_clifford.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,10 @@

"""Tests for Clifford class."""

import os
import subprocess
import sys
import textwrap
import unittest
import itertools
import numpy as np
Expand Down Expand Up @@ -174,6 +178,27 @@ def test_append_1_qubit_gate(self):
np.all(np.array(value_destabilizer == [target_destabilizer[gate_name]]))
)

@combine(hash_seed=["1","2","10","100"])
def test_random_clifford_circuit_with_same_seed(self, hash_seed):
env = os.environ.copy()
env["PYTHONHASHSEED"] = hash_seed

test_script= textwrap.dedent("""
from qiskit.circuit.random.utils import random_clifford_circuit
cliff_circuit = random_clifford_circuit(num_qubits=10, num_gates=100, gates="all", seed=0)
print(cliff_circuit.count_ops())
""")

result = subprocess.run(
[sys.executable, "-c", test_script],
env=env,
capture_output=True,
text=True,
check=True
)

self.assertEqual(result.stdout, "OrderedDict({'sxdg': 10, 'sdg': 10, 'iswap': 9, 'cz': 9, 'id': 9, 'h': 8, 'cy': 8, 'x': 6, 'ecr': 6, 'cx': 6, 'dcx': 4, 'swap': 4, 's': 4, 'y': 3, 'sx': 3, 'z': 1})\n")

@combine(
gate=[
IGate(),
Expand Down