Figure3a: Reconstructed density matrix of the mixed use as input.
Figure3b: Reconstructed density matrix of the 4 generated Bell states. 

Data are 4x4 matrices of complex numbers indexed as indicated below. The real part is shown in Figure3 of the main text. Imaginary part in Figure S2 of the supplementary material
	 
Data row index (latex notation):
            $\uparrow_z \!  \uparrow_z $', '$\uparrow_z \downarrow_z $', '$\downarrow_z \! \uparrow_z $', '$\downarrow_z  \downarrow_z $'
Data column index:
	$\uparrow_z \!  \uparrow_z $', '$\uparrow_z \downarrow_z $', '$\downarrow_z \! \uparrow_z $', '$\downarrow_z  \downarrow_z $'