# Table 1 Measures of entanglement

Subspace Fidelity Concurrence
$$\ell = \pm 1$$ 0.80 ± 0.02 0.67 ± 0.04
$$\ell = \pm 2$$ 0.86 ± 0.04 0.75 ± 0.08
$$\ell = - 2, - 1$$ 0.83 ± 0.04 0.76 ± 0.07
$$\ell = - 2,1$$ 0.77 ± 0.02 0.65 ± 0.05
$$\ell = 2, - 1$$ 0.79 ± 0.07 0.65 ± 0.11
$$\ell = 2,1$$ 0.74 ± 0.04 0.61 ± 0.07
Average 0.80 ± 0.10 0.68 ± 0.18
1. Fidelity and concurrence for each of the six two-dimensional subspaces