C贸digo fuente para qiskit.algorithms.evolvers.imaginary_evolver

# This code is part of Qiskit.
# (C) Copyright IBM 2021, 2022.
# 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
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"""Interface for Quantum Imaginary Time Evolution."""

from abc import ABC, abstractmethod

from qiskit.utils.deprecation import deprecate_func
from .evolution_problem import EvolutionProblem
from .evolution_result import EvolutionResult

[documentos]class ImaginaryEvolver(ABC): """Deprecated: Interface for Quantum Imaginary Time Evolution. The ImaginaryEvolver interface has been superseded by the :class:`qiskit.algorithms.time_evolvers.ImaginaryTimeEvolver` interface. This interface will be deprecated in a future release and subsequently removed after that. """ @deprecate_func( additional_msg=( "Instead, use the interface ``qiskit.algorithms.time_evolvers.ImaginaryTimeEvolver``. " "See https://qisk.it/algo_migration for a migration guide." ), since="0.24.0", ) def __init__(self) -> None: pass
[documentos] @abstractmethod def evolve(self, evolution_problem: EvolutionProblem) -> EvolutionResult: r"""Perform imaginary time evolution :math:`\exp(-\tau H)|\Psi\rangle`. Evolves an initial state :math:`|\Psi\rangle` for an imaginary time :math:`\tau` under a Hamiltonian :math:`H`, as provided in the ``evolution_problem``. Args: evolution_problem: The definition of the evolution problem. Returns: Evolution result which includes an evolved quantum state. """ raise NotImplementedError()