Von Neumann entropy
Numerical results for the von Neumann entropy of the five lowest excited states as a function of the voltage parameter \( \lambda \). The entropies \( S_1 \) and \( S_2 \) of the \( \vert\Phi_1\rangle \) respectively \( \vert\Phi_2\rangle \) states are nearly identical. Note that the peaks in entropy corresponds to the avoided crossings.