Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 52: Structured Light
Q 52.3: Vortrag
Donnerstag, 14. März 2024, 15:15–15:30, HS 1221
Vortex-light Raman interaction with 40Ca+ ion crystals — •Maurizio Verde1, Benjamin Zenz1, Ulrich Poschinger1, Nicolas Nuñez3, Christian Schmiegelow3, and Ferdinand Schmidt-Kaler1,2 — 1QUANTUM, Institut für Physik, Universität Mainz, Mainz, Germany — 2Helmholtz-Institut Mainz, Mainz, Germany — 3FCEyN, Departamento de Física, Universidad de Buenos Aires, Buenos Aires, Argentina
Light beams carrying Orbital Angular Momentum (OAM) differently excite electronic and motional transitions of trapped atoms, and may thus be interesting for quantum optics, -sensing and -information processing. We experimentally demonstrated the transfer of transverse optical momentum to the quantized motion of a single 40Ca+ ion [1] and provided a general theoretical framework to describe the light-matter interaction for spatially structured light [2]. Here, we investigate vortex light in the Raman scheme, where two beams excite trapped 40Ca+ ions near 397nm and one of them is formed as a vortex beam with topological charge l=+1. We report on the Raman spectra for a single ion to determine the impact on its electronic and motional excitation. We extend this study for the orbital angular momentum transfer to two-ions crystals.
[1]Stopp et al., Phys. Rev. Lett. 129, 263603 (2022)
[2]Verde et al., arXiv:2306.17571 (2023), accepted on Sci. Rep.
Keywords: Quantum Optics; Orbital Angular Momentum; Trapped ions; Ion crystals