We study coherent light scattering from linear crystals with up to twelve ${}^{40}\mathrm{Ca}^{+}$ ions, acting as single photon emitters. Light scattering is induced by two-photon laser excitation, starting from the $S_{1/2}\to D_{5/2}$ quadrupole transition at 729 nm followed by the $D_{5/2}\to P_{3/2}$ dipole transition at 854 nm, from where the ions decay back to the $S_{1/2}$ ground state via emission of a photon near 393 nm. We realize spin-selective excitation from the Zeeman-split ground states $S_{1/2}, \mathrm{m}=\pm 1/2$, of the ${\text{Ca}}^{+}$ ions and observe, in the far-field, spin-dependent interference patterns displaying the spin textures of the ion crystals. We investigate their dynamics by measuring the temporal evolution of the spatial Fourier frequencies of the observed patterns.

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• Quantum correlations in quantum information
• Quantum correlations, foundations & formalism