Induced transparency: interference or polarization?
Abstract
The polarization of optical fields is a crucial degree of freedom in the all-optical analogue of electromagnetically induced transparency (EIT). However, the physical origins of EIT and polarization induced phenomena have not been well distinguished, which can lead to confusion in associated applications such as slow light and optical/quantum storage. Here we study the polarization effects in various optical EIT systems. We find that a polarization mismatch between whispering gallery modes in two indirectly coupled resonators can induce a narrow transparency window in the transmission spectrum resembling the EIT lineshape. However, such polarization induced transparency (PIT) is distinct from EIT: it originates from strong polarization rotation effects and shows unidirectional feature. The coexistence of PIT and EIT provides new routes for the manipulation of light flow in optical resonator systems.
Cite
@article{arxiv.2109.13322,
title = {Induced transparency: interference or polarization?},
author = {Changqing Wang and Xuefeng Jiang and William R. Sweeney and Chia Wei Hsu and Yiming Liu and Guangming Zhao and Bo Peng and Mengzhen Zhang and Liang Jiang and A. Douglas Stone and Lan Yang},
journal= {arXiv preprint arXiv:2109.13322},
year = {2021}
}
Comments
8 pages, 4 figures, 57 references. The published version can be found via ULR: https://www.pnas.org/content/118/3/e2012982118