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17 changes: 17 additions & 0 deletions
17
releasenotes/notes/fix-cached-params-update-4d2814b698fa76b4.yaml
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Original file line number | Diff line number | Diff line change |
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--- | ||
fixes: | ||
- | | ||
Fixed a bug in :meth:`.QuantumCircuit.assign_parameters`, occurring when assigning parameters | ||
to standard gates whose definition has already been triggered. In this case, the new values | ||
were not properly propagated to the gate instances. While the circuit itself was still | ||
compiled as expected, inspecting the individual operations would still show the old parameter. | ||
For example:: | ||
from qiskit.circuit.library import EfficientSU2 | ||
circuit = EfficientSU2(2, flatten=True) | ||
circuit.assign_parameters([1.25] * circuit.num_parameters, inplace=True) | ||
print(circuit.data[0].operation.params) # would print θ[0] instead of 1.25 | ||
Fixed `#13478 <https://github.com/Qiskit/qiskit/issues/13478>`__. |
3 changes: 3 additions & 0 deletions
3
releasenotes/notes/fix-inverse-cancellation-c7f4debcde4a705a.yaml
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Original file line number | Diff line number | Diff line change |
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fixes: | ||
- | | ||
The transpilation pass :class`.InverseCancellation` now runs inside of flow controlled blocks. Previously, it ignores the pairs of gates in classical blocks that can be cancelled. Refer to `#13437 <https://github.com/Qiskit/qiskit/issues/13437>` for more details. |
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Original file line number | Diff line number | Diff line change |
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# This code is part of Qiskit. | ||
# | ||
# (C) Copyright IBM 2024 | ||
# | ||
# This code is licensed under the Apache License, Version 2.0. You may | ||
# obtain a copy of this license in the LICENSE.txt file in the root directory | ||
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0. | ||
# | ||
# Any modifications or derivative works of this code must retain this | ||
# copyright notice, and modified files need to carry a notice indicating | ||
# that they have been altered from the originals. | ||
|
||
# pylint: disable=missing-docstring | ||
# pylint: disable=attribute-defined-outside-init | ||
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from qiskit.circuit import Parameter | ||
from qiskit import QuantumCircuit | ||
from qiskit import qasm3 | ||
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from .utils import random_circuit | ||
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class RandomBenchmarks: | ||
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params = ([20], [256, 1024], [0, 42]) | ||
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param_names = ["n_qubits", "depth", "seed"] | ||
timeout = 300 | ||
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def setup(self, n_qubits, depth, seed): | ||
self.circuit = random_circuit( | ||
n_qubits, | ||
depth, | ||
measure=True, | ||
conditional=True, | ||
reset=True, | ||
seed=seed, | ||
max_operands=3, | ||
) | ||
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def time_dumps(self, _, __, ___): | ||
qasm3.dumps(self.circuit) | ||
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class CustomGateBenchmarks: | ||
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params = ([200], [100]) | ||
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param_names = ["n_qubits", "depth"] | ||
timeout = 300 | ||
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def setup(self, n_qubits, depth): | ||
custom_gate = QuantumCircuit(2, name="custom_gate") | ||
custom_gate.h(0) | ||
custom_gate.x(1) | ||
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qc = QuantumCircuit(n_qubits) | ||
for _ in range(depth): | ||
for i in range(n_qubits - 1): | ||
qc.append(custom_gate.to_gate(), [i, i + 1]) | ||
self.circuit = qc | ||
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def time_dumps(self, _, __): | ||
qasm3.dumps(self.circuit) | ||
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class ParameterizedBenchmarks: | ||
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params = ([20, 50], [1, 5, 10]) | ||
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param_names = ["n_qubits", "n_params"] | ||
timeout = 300 | ||
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def setup(self, n_qubits, n_params): | ||
qc = QuantumCircuit(n_qubits) | ||
params = [Parameter(f"angle{i}") for i in range(n_params)] | ||
for n in range(n_qubits - 1): | ||
for i in params: | ||
qc.rx(i, n) | ||
self.circuit = qc | ||
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def time_dumps(self, _, __): | ||
qasm3.dumps(self.circuit) |
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