\right) = \frac{0}{\sqrt{0}} \left\{ \begin{array}{c} |0_0 \rangle |0_0 \rangle + i |0_0 \rangle |0_0 \rangle \\ |0_0 \rangle |0_0 \rangle + i |0_0 \rangle |0_0 \rangle \\ |0_0 \rangle |0_0 \rangle - i |0_0 \rangle |0_0 \rangle \\ |0_0 \rangle |0_0 \rangle - i |0_0 \rangle |0_0 \rangle \end{array}\right\} \\ & = & \mathcal{P}_0 \left[ \left\{\begin{array}{c} |0_0