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# Copyright 2023 Google LLC | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# https://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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"""Qubit Manager to use when converting Cirq gates to/from Bloqs.""" | ||
from typing import Iterable | ||
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import cirq | ||
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class InteropQubitManager(cirq.ops.SimpleQubitManager): | ||
"""Qubit Manager to use to facilitate interop of Cirq gates and Bloqs.""" | ||
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def __init__(self): | ||
super().__init__() | ||
self._managed_qubits = set() | ||
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def manage_qubits(self, qubits: Iterable[cirq.Qid]): | ||
self._managed_qubits |= set(qubits) | ||
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def qfree(self, qubits: Iterable[cirq.Qid]): | ||
qs = set(qubits) | ||
managed_qs = qs & self._managed_qubits | ||
qs -= managed_qs | ||
self._managed_qubits -= managed_qs | ||
super().qfree(qs) |
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# Copyright 2023 Google LLC | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# https://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
import cirq | ||
import pytest | ||
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from qualtran.cirq_interop._interop_qubit_manager import InteropQubitManager | ||
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def test_interop_qubit_manager(): | ||
qm = InteropQubitManager() | ||
q = cirq.q('junk') | ||
with pytest.raises(ValueError, match='not allocated'): | ||
qm.qfree([q]) | ||
# You can delegate qubits to be "managed" by the InteropQubitManager. | ||
qm.manage_qubits([q]) | ||
qm.qfree([q]) | ||
# q was already deallocated. | ||
with pytest.raises(ValueError, match='not allocated'): | ||
qm.qfree([q]) |