Function born_probability_kernel 

pub fn born_probability_kernel(
    state: &HilbertState,
    basis: &HilbertState,
) -> Result<f64, PhysicsError>

Calculates the Born probability: $P = |\langle \text{basis} | \text{state} \rangle|^2$.

Arguments

• state - Quantum state vector $|\psi\rangle$.
• basis - Basis vector/state $|\phi\rangle$.

Returns

• Ok(f64) - Probability $P$.