qcmet.utils.fidelities.normalized_fidelity

qcmet.utils.fidelities.normalized_fidelity(exact_probs, device_probs)

Normalize fidelity against a fully depolarized output distribution.

This metric compares how close the hardware distribution is to the exact one, normalized against a fully depolarized output distribution.

Parameters:

• exact_probs (list or np.ndarray) – Ideal or exact probability distribution.

• device_probs (list or np.ndarray) – Measured or hardware probability distribution.

Returns:

Normalized fidelity score in the range [0, 1].

Return type:

float