Spin-selective coherent light scattering from ion crystals

2024/04/18 by Maurizio Verde, Ansgar Schaefer, Verde, Maurizio +13 · 1 citation
Engineering · Physics and Astronomy · #Magneto-Optical Properties and Applications #Quantum optics and atomic interactions

paper · pdf · doi:10.48550/arxiv.2404.12513

Abstract

We study coherent light scattering from linear crystals with up to twelve ⁴⁰Ca⁺ ions, acting as single photon emitters. Light-scattering is induced by two-photon laser excitation, starting from the S_1/2→ D_5/2 quadrupole transition at 729~nm followed by the D_5/2→ 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, m= ± 1/2, of the 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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