Normal-mode splitting of four-level atom-cavity system under collective strong coupling
Abstract
We investigate the transmission spectrum of an optical cavity coupled with four-level atoms. Multiple normal-mode splitting peaks of the strongly coupled atom-cavity system are obtained as single cavity mode couples three separated atomic transitions simultaneously. We employ a confocal optical cavity and an ensemble of cold Rb-85 atoms for cavity quantum electrodynamics. We observe four normal-mode splitting peaks of the cavity transmission in the strong coupling regime due to collective enhancement of the atom-cavity coupling strength by ensemble of cold atoms. The experimental observations are consistent with the theoretical analysis. The multiple normal-mode excitation in the strongly coupled multi-level atom-cavity system may lead to practical application for realizing multi-channel all-optical devices.
Cite
@article{arxiv.1901.00127,
title = {Normal-mode splitting of four-level atom-cavity system under collective strong coupling},
author = {Zheng Tan and Liyong Wang and Min Liu and Yifu Zhu and Jin Wang and Mingsheng Zhan},
journal= {arXiv preprint arXiv:1901.00127},
year = {2019}
}
Comments
23 pages, 6 figures