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The Panopticon device: an integrated Paul-trap-hemispherical mirror system for quantum optics
preprintposted on 2023-11-30, 19:56 authored by Gabriel Araneda, Giovanni Cerchiari, Daniel B. Higginbottom, Philip C. Holz, Kirill Lakhmanskiy, Petr Obšil, Yves Colombe, Rainer Blatt
We present the design and construction of a new experimental apparatus for the trapping of single Ba$^+$ ions in the center of curvature of an optical-quality hemispherical mirror. We describe the layout, fabrication and integration of the full setup, consisting of a high-optical access monolithic `3D-printed' Paul trap, the hemispherical mirror, a diffraction-limited in-vacuum lens (NA = 0.7) for collection of atomic fluorescence and a state-of-the art ultra-high vacuum vessel. This new apparatus enables the study of quantum electrodynamics effects such as strong inhibition and enhancement of spontaneous emission, and achieves a collection efficiency of the emitted light in a single optical mode of 31%.