C贸digo fuente para qiskit.quantum_info.operators.mixins.adjoint

# This code is part of Qiskit.
# (C) Copyright IBM 2017, 2021.
# 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.

Mixin for gate operator interface.

import sys
from abc import ABC, abstractmethod

if sys.version_info >= (3, 11):
    from typing import Self
    from typing_extensions import Self

class AdjointMixin(ABC):
    """Abstract Mixin for operator adjoint and transpose operations.

    This class defines the following methods

        - :meth:`transpose`
        - :meth:`conjugate`
        - :meth:`adjoint`

    The following abstract methods must be implemented by subclasses
    using this mixin

        - ``conjugate(self)``
        - ``transpose(self)``

    def adjoint(self) -> Self:
        """Return the adjoint of the CLASS."""
        return self.conjugate().transpose()

    def conjugate(self) -> Self:
        """Return the conjugate of the CLASS."""

    def transpose(self) -> Self:
        """Return the transpose of the CLASS."""