We study nonreciprocal microwave transmission based on the Gebhard-Ruckenstein hopping. We consider a superconducting device that consists of microwave resonators and a coupler. The Gebhard-Ruckenstein hopping between the resonators gives rise to a linear energy dispersion which manifests chiral propagation of microwaves in the device. This device functions as an on-chip circulator with a wide bandwidth when transmission lines are attached.
@article{arxiv.1804.02936,
title = {Nonreciprocal microwave transmission based on Gebhard-Ruckenstein hopping},
author = {Shumpei Masuda and Shingo Kono and Keishi Suzuki and Yuuki Tokunaga and Yasunobu Nakamura and Kazuki Koshino},
journal= {arXiv preprint arXiv:1804.02936},
year = {2019}
}