Source code for qilisdk.noise.parameter_perturbation

# Copyright 2025 Qilimanjaro Quantum Tech
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# Licensed under the Apache License, Version 2.0 (the "License");
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#     http://www.apache.org/licenses/LICENSE-2.0
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from __future__ import annotations

from abc import abstractmethod

from .noise_abc import NoiseABC
from .protocols import AttachmentScope, HasAllowedScopes




class ParameterPerturbation(NoiseABC, HasAllowedScopes):
    """Base class for noise that perturbs a numeric parameter."""

    @abstractmethod


    def perturb(self, value: float) -> float:
        """Return a perturbed version of a parameter value.

        Args:
            value (float): The original parameter value.

        Returns:
            The perturbed parameter value.
        """
        ...


    @classmethod


    def allowed_scopes(cls) -> frozenset[AttachmentScope]:
        """Return the attachment scopes supported by this perturbation type.

        Returns:
            The set of scopes where this perturbation can be attached.
        """
        return frozenset({AttachmentScope.GLOBAL, AttachmentScope.PER_GATE_TYPE})