Quantum 2025 – scientific programme
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THU: Thursday Contributed Sessions
THU 13: Poster Session: Applications
THU 13.49: Poster
Thursday, September 11, 2025, 16:30–18:30, ZHG Foyer 1. OG
Spin-selective coherent light scattering from ion crystals — •Zyad Shehata1, Benjamin Zenz2, Ansgar Schaefer2, Maurizio Verde2, Stefan Richter1, Joachim von Zanthier1, and Ferdinand Schmidt-Kaler2 — 1Department Physik, FAU Erlangen Nürnberg — 2QUANTUM, Institut für Physik, JGU mainz
We study spin-selective coherent light scattering from linear crystals with up to twelve 40Ca+ ions [1]. The Ca+ ions are excited on a two-photon quadrupole and dipole transition at 729 and 854 nm, respectively; in this way emission of coherent photons at 393 nm is induced such that in the far field an interference pattern of a background-free signal is recorded on a high spatiotemporal resolution camera (LINCAM). We realize spin-selective excitation from the Zeeman-split ground states S1/2, m= *1/2, of Ca+ and thus observe 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.
[1] M. Verde et al., arXiv:2404.12513
Keywords: Quantum optics; Ion trapping; Spin selectivity