[WIP] Remove qiskit_algorithms

Author: t-imamichi

constraints.txt

@@ -1 +1,2 @@
 numpy>=1.20.0
+jedi<0.19

qiskit_optimization/__init__.py

@@ -26,7 +26,7 @@
 A uniform interface as well as automatic conversion between different problem representations
 allows users to solve problems using a large set of algorithms, from variational quantum algorithms,
 such as the Quantum Approximate Optimization Algorithm
-(:class:`~qiskit_algorithms.QAOA`), to
+(:class:`~qiskit_optimization.minimum_eigensolvers.QAOA`), to
 `Grover Adaptive Search <https://arxiv.org/abs/quant-ph/9607014>`_
 (:class:`~algorithms.GroverOptimizer`), leveraging
 fundamental `minimum eigensolvers
@@ -85,7 +85,7 @@
 
 """
 
-from .exceptions import QiskitOptimizationError, AlgorithmError
+from .exceptions import AlgorithmError, QiskitOptimizationError
 from .infinity import INFINITY  # must be at the top of the file
 from .problems.quadratic_program import QuadraticProgram
 from .version import __version__

qiskit_optimization/algorithms/admm_optimizer.py

@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2020, 2024.
+# (C) Copyright IBM 2020, 2025.
 #
 # 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
@@ -17,9 +17,9 @@
 from typing import List, Optional, Tuple, cast
 
 import numpy as np
-from qiskit_algorithms import NumPyMinimumEigensolver
 
 from ..converters import MaximizeToMinimize
+from ..minimum_eigensolvers import NumPyMinimumEigensolver
 from ..problems.constraint import Constraint
 from ..problems.linear_constraint import LinearConstraint
 from ..problems.linear_expression import LinearExpression

qiskit_optimization/algorithms/grover_optimizer.py

@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2020, 2024.
+# (C) Copyright IBM 2020, 2025.
 #
 # 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
@@ -21,19 +21,18 @@
 from qiskit import QuantumCircuit, QuantumRegister
 from qiskit.circuit.library import QuadraticForm
 from qiskit.primitives import BaseSampler
-from qiskit_algorithms import AmplificationProblem
-from qiskit_algorithms.amplitude_amplifiers.grover import Grover
-from qiskit_algorithms.utils import algorithm_globals
 
 from qiskit_optimization.algorithms.optimization_algorithm import (
     OptimizationAlgorithm,
     OptimizationResult,
     OptimizationResultStatus,
     SolutionSample,
 )
+from qiskit_optimization.amplitude_amplifiers.grover import AmplificationProblem, Grover
 from qiskit_optimization.converters import QuadraticProgramConverter, QuadraticProgramToQubo
 from qiskit_optimization.exceptions import QiskitOptimizationError
 from qiskit_optimization.problems import QuadraticProgram, Variable
+from qiskit_optimization.utils import algorithm_globals
 
 logger = logging.getLogger(__name__)
 

qiskit_optimization/algorithms/minimum_eigen_optimizer.py

@@ -15,15 +15,15 @@
 
 import numpy as np
 from qiskit.quantum_info import SparsePauliOp
+
+from ..converters.quadratic_program_to_qubo import QuadraticProgramConverter, QuadraticProgramToQubo
+from ..exceptions import QiskitOptimizationError
 from ..minimum_eigensolvers import (
     NumPyMinimumEigensolver,
     NumPyMinimumEigensolverResult,
     SamplingMinimumEigensolver,
     SamplingMinimumEigensolverResult,
 )
-
-from ..converters.quadratic_program_to_qubo import QuadraticProgramConverter, QuadraticProgramToQubo
-from ..exceptions import QiskitOptimizationError
 from ..problems.quadratic_program import QuadraticProgram, Variable
 from .optimization_algorithm import (
     OptimizationAlgorithm,
@@ -109,7 +109,7 @@ class MinimumEigenOptimizer(OptimizationAlgorithm):
 
     .. code-block::
 
-        from qiskit_algorithms import QAOA
+        from qiskit_optimization.minimum_eigensolvers import QAOA
         from qiskit_optimization.problems import QuadraticProgram
         from qiskit_optimization.algorithms import MinimumEigenOptimizer
         problem = QuadraticProgram()
@@ -222,7 +222,8 @@ def _solve_internal(
                 raise QiskitOptimizationError(
                     "MinimumEigenOptimizer does not support this minimum eigensolver "
                     f"{type(self._min_eigen_solver)}. "
-                    "You can use qiskit_algorithms.SamplingMinimumEigensolver instead."
+                    "You can use qiskit_optimization.minimum_eigensolvers."
+                    "SamplingMinimumEigensolver instead."
                 )
             if eigen_result.eigenstate is not None:
                 raw_samples = self._eigenvector_to_solutions(

qiskit_optimization/algorithms/qrao/__init__.py

@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2023.
+# (C) Copyright IBM 2023, 2025.
 #
 # 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
@@ -48,8 +48,8 @@
 
 .. code-block:: python
 
-    from qiskit_algorithms.optimizers import COBYLA
-    from qiskit_algorithms import VQE
+    from qiskit_optimization.optimizers import COBYLA
+    from qiskit_optimization.minimum_eigensolvers import VQE
     from qiskit.circuit.library import RealAmplitudes
     from qiskit.primitives import Estimator
 

qiskit_optimization/algorithms/qrao/magic_rounding.py

@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2023, 2024.
+# (C) Copyright IBM 2023, 2025.
 #
 # 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
@@ -19,10 +19,9 @@
 from qiskit import QuantumCircuit
 from qiskit.primitives import BaseSampler
 from qiskit.quantum_info import SparsePauliOp
-from qiskit_algorithms.exceptions import AlgorithmError
 
 from qiskit_optimization.algorithms import OptimizationResultStatus, SolutionSample
-from qiskit_optimization.exceptions import QiskitOptimizationError
+from qiskit_optimization.exceptions import AlgorithmError, QiskitOptimizationError
 
 from .quantum_random_access_encoding import (
     _z_to_21p_qrac_basis_circuit,

qiskit_optimization/algorithms/qrao/quantum_random_access_optimizer.py

@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2023.
+# (C) Copyright IBM 2023, 2025.
 #
 # 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
@@ -13,16 +13,10 @@
 """Quantum Random Access Optimizer class."""
 from __future__ import annotations
 
-from typing import cast, List
+from typing import List, cast
 
 import numpy as np
 from qiskit import QuantumCircuit
-from qiskit_algorithms import (
-    MinimumEigensolver,
-    MinimumEigensolverResult,
-    NumPyMinimumEigensolverResult,
-    VariationalResult,
-)
 
 from qiskit_optimization.algorithms import (
     OptimizationAlgorithm,
@@ -31,7 +25,13 @@
     SolutionSample,
 )
 from qiskit_optimization.converters import QuadraticProgramToQubo
+from qiskit_optimization.minimum_eigensolvers import (
+    MinimumEigensolver,
+    MinimumEigensolverResult,
+    NumPyMinimumEigensolverResult,
+)
 from qiskit_optimization.problems import QuadraticProgram, Variable
+from qiskit_optimization.variational_algorithm import VariationalResult
 
 from .quantum_random_access_encoding import QuantumRandomAccessEncoding
 from .rounding_common import RoundingContext, RoundingResult, RoundingScheme

qiskit_optimization/algorithms/recursive_minimum_eigen_optimizer.py

@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2020, 2024.
+# (C) Copyright IBM 2020, 2025.
 #
 # 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
@@ -17,13 +17,13 @@
 from typing import Dict, List, Optional, Tuple, Union, cast
 
 import numpy as np
-from qiskit_algorithms import NumPyMinimumEigensolver
-from qiskit_algorithms.utils.validation import validate_min
 
 from ..converters.quadratic_program_to_qubo import QuadraticProgramConverter, QuadraticProgramToQubo
 from ..exceptions import QiskitOptimizationError
+from ..minimum_eigensolvers import NumPyMinimumEigensolver
 from ..problems import Variable
 from ..problems.quadratic_program import QuadraticProgram
+from ..utils.validation import validate_min
 from .minimum_eigen_optimizer import MinimumEigenOptimizationResult, MinimumEigenOptimizer
 from .optimization_algorithm import (
     OptimizationAlgorithm,
@@ -117,7 +117,7 @@ class RecursiveMinimumEigenOptimizer(OptimizationAlgorithm):
 
     .. code-block:: python
 
-        from qiskit_algorithms import QAOA
+        from qiskit_optimization.minimum_eigensolvers import QAOA
         from qiskit_optimization.problems import QuadraticProgram
         from qiskit_optimization.algorithms import (
             MinimumEigenOptimizer, RecursiveMinimumEigenOptimizer
@@ -161,7 +161,7 @@ def __init__(  # pylint: disable=too-many-positional-arguments
             min_num_vars_optimizer: This optimizer is used after the recursive scheme for the
                 problem with the remaining variables. Default value is
                 :class:`~qiskit_optimization.algorithms.MinimumEigenOptimizer` created on top of
-                :class:`~qiskit_algorithms.NumPyMinimumEigensolver`.
+                :class:`~qiskit_optimization.minimum_eigensolvers.NumPyMinimumEigensolver`.
             penalty: The factor that is used to scale the penalty terms corresponding to linear
                 equality constraints.
             history: Whether the intermediate results are stored.

qiskit_optimization/algorithms/warm_start_qaoa_optimizer.py

@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2021, 2024.
+# (C) Copyright IBM 2021, 2025.
 #
 # 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
@@ -19,10 +19,10 @@
 import numpy as np
 from qiskit import QuantumCircuit
 from qiskit.circuit import Parameter
-from qiskit_algorithms import QAOA
 
 from ..converters.quadratic_program_converter import QuadraticProgramConverter
 from ..exceptions import QiskitOptimizationError
+from ..minimum_eigensolvers import QAOA
 from ..problems.quadratic_program import QuadraticProgram
 from ..problems.variable import VarType
 from .minimum_eigen_optimizer import MinimumEigenOptimizationResult, MinimumEigenOptimizer

qiskit_optimization/amplitude_amplifiers/__init__.py

@@ -0,0 +1,25 @@
+# This code is part of a Qiskit project.
+#
+# (C) Copyright IBM 2020, 2025.
+#
+# 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.
+
+"""Amplitude Amplifiers Package"""
+
+from .amplification_problem import AmplificationProblem
+from .amplitude_amplifier import AmplitudeAmplifier, AmplitudeAmplifierResult
+from .grover import Grover, GroverResult
+
+__all__ = [
+    "AmplitudeAmplifier",
+    "AmplitudeAmplifierResult",
+    "AmplificationProblem",
+    "Grover",
+    "GroverResult",
+]