We experimentally and theoretically study a driven hybrid circuit quantum electrodynamics (cQED) system beyond the dispersive coupling regime. Treating the cavity as part of the driven system, we develop a theory applicable to such strongly coupled and to multi-qubit systems. The fringes measured for a single driven double quantum dot (DQD)-cavity setting and the enlarged splittings of the hybrid Floquet states in the presence of a second DQD are well reproduced with our model. This opens a path to study Floquet states of multi-qubit systems with arbitrarily strong coupling and reveals a new perspective for understanding strongly driven hybrid systems.
@article{arxiv.2212.10212,
title = {Probing two driven double quantum dots strongly coupled to a cavity},
author = {Si-Si Gu and Sigmund Kohler and Yong-Qiang Xu and Rui Wu and Shun-Li Jiang and Shu-Kun Ye and Ting Lin and Bao-Chuan Wang and Hai-Ou Li and Gang Cao and Guo-Ping Guo},
journal= {arXiv preprint arXiv:2212.10212},
year = {2023}
}