Figure 5
From: Bright nanoscale source of deterministic entangled photon pairs violating Bell’s inequality
Twelve cross-correlation measurements between the biexciton and exciton for different polarization detection bases, from top to bottom: rectilinear, diagonal and circular basis. The first (second) letter in the graphs stands for the polarization detection angle of the biexciton (exciton). The fidelity to the \((|{\rm{HH}}\rangle +|{\rm{VV}}\rangle )/\sqrt{2}\) state is F = 0.817 ± 0.002 without temporal post-selection. These measurements are used to extract the Bell parameters in three orthogonal planes of the Poincaré sphere, given in Table 2.
