Table 1 Measures of entanglement

From: Simultaneous entanglement swapping of multiple orbital angular momentum states of light

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