Function negativity 

pub fn negativity(
    state: &QuantumState,
    dims: (usize, usize),
) -> Result<f64, QuantumInfoError>

Calculate the negativity of a bipartite state.

N(ρ) = (||ρ^{T_A}||₁ - 1) / 2 where ρ^{T_A} is the partial transpose.

Arguments

• state - Bipartite quantum state
• dims - Dimensions of subsystems (dim_A, dim_B)

Returns

The negativity N ≥ 0