We demonstrate an all-fiber cavity QED system with a trapped single atom in the strong coupling regime. We use a nanofiber Fabry-Perot cavity, that is, an optical nanofiber sandwiched by two fiber-Bragg-grating mirrors. Measurements of the cavity transmission spectrum with a single atom in a state-insensitive nanofiber trap clearly reveal the vacuum Rabi splitting.
@article{arxiv.1505.06774,
title = {Strong coupling between a trapped single atom and an all-fiber cavity},
author = {Shinya Kato and Takao Aoki},
journal= {arXiv preprint arXiv:1505.06774},
year = {2015}
}