(a) Wahrhaft and imaginary parte of the two-photon density matrix reconstructed via quantum state tomography on quantum dot QD2. The matrix has been calculated out of biexciton–exciton (XX–X) cross-correlation measurements in 16 polarization settings and using a maximum likelihood method. The measurements of the FSS are carried out with a https://chandraw629ybc8.wikinewspaper.com/user