SciCode / 19.2 / Compute the n-tangle of a n-qubit pure state |ψ⟩ where n is…

Background
For even n, the n-tangle of a pure state ψ is given by
$$
|\langle\psi|\sigma_y^{\otimes n}|\psi^*\rangle|^2
$$
where σ_(y) is the Pauli Y matrix, and $|\psi^*\rangle$ is the complex conjugate of state |ψ⟩.

Background
For even $n$, the $n$-tangle of a pure state $\psi$ is given by
$$
|\langle\psi|\sigma_y^{\otimes n}|\psi^*\rangle|^2
$$
where $\sigma_y$ is the Pauli Y matrix, and $|\psi^*\rangle$ is the complex conjugate of state $|\psi\rangle$.

Compute the n-tangle of a n-qubit pure state |ψ⟩ where n is even. The input is psi, an 2^(n) dimensional array of floats. The output is the n-tangle of state which is a float.

Compute the $n$-tangle of a $n$-qubit pure state $|\psi\rangle$ where $n$ is even. The input is psi, an $2^n$ dimensional array of floats. The output is the $n$-tangle of state which is a float.