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MON: Monday Contributed Sessions
MON 23: Poster Session: Fundamental Aspects and Model Systems
MON 23.40: Poster
Montag, 8. September 2025, 18:30–20:30, ZHG Foyer 1. OG
Cavity QED experiments and lasing with cold trapped Yb atoms — •Ke Li1, Saran Shaju1, Gabriel Dick1, Simon B. Jäger2, and Jürgen Eschner1 — 1Universität des Saarlandes, Physik, 66123 Saarbrücken, Germany — 2Universität Bonn, Physikalisches Institut, 53115 Bonn,Germnay
Cavity quantum electrodynamics with cold atoms enables the controlled interactions between atoms and photons, providing advanced applications in quantum technologies and fundamental science. In our research, 104 to 106 Ytterbium-174 atoms are magneto-optically trapped, using the 1S0-1P1 transition at 399 nm, inside a high-finesse cavity that couples to the 1S0-3P1 intercombination transition. We have observed lasing action in both single- and multi-mode emission [1]. Additionally, the collective strong coupling leads to complex atom-field dynamics and scattering phenomena, including vacuum Rabi splitting accompanied by additional fluorescence at atomic resonance [2]. Future research will be extended to studying the quantum dynamics of atom-cavity interactions on the 1S0-3P0 clock transition.
[1] H. Gothe et al., Physical Review A 99.1 (2019) 013415.
[2] S. Shaju et al. , arXiv:2404.12173 (2024).
Keywords: Cavity qed; Many-body quantum system; Cold atom lasing; Optical clocks