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arXiv · 2408.08257

Design and Fabrication of Ultrahigh Q Chip-Based Silica WGM Micro-resonators for Single-Atom Cavity-QED

Tal Shahar Ohana·Gabriel Guendelman·Eran Mishuk·Nadav Kandel·Dror Garti·Doron Gurevich·Ora Bitton·Barak Dayan
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Abstract

Of the many applications of whispering-gallery mode (WGM) microresonators, Single-atom cavity-QED poses the most extreme demands on mode-volume and quality factor. Here we present a model-based procedure for the fabrication of small mode-volume ultrahigh Q silica WGM microresonators of varying geometries, from toroidal to micro-spheres. We experimentally demonstrate WGM resonators with ultra-high qualities as high as $1.7\times 10^8$ at 780nm. We present a theoretical model that allows tailoring the recipe to attain the desired geometry of the fabricated WGM microresonators.

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Tal Shahar Ohana, Gabriel Guendelman, Eran Mishuk, Nadav Kandel, Dror Garti, Doron Gurevich, Ora Bitton, Barak Dayan. 2024-08-15. Design and Fabrication of Ultrahigh Q Chip-Based Silica WGM Micro-resonators for Single-Atom Cavity-QED. https://arxiv.org/abs/2408.08257

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