Josephson radiation patterns in underdamped topological Josephson junctions
Abstract
Josephson radiation is a useful signature for detecting Majorana zero modes in topological superconductors. We study the Josephson radiation of the underdamped topological Josephson junction within the quantum resistively and capacitively shunted junction model. We show that the quantum dynamics of the Majorana two-level system induce oscillatory patterns in the Josephson emission spectra. With the Floquet method, we obtain analytical results for these oscillatory patterns and find that they are well described by Bessel functions. We perform numerical simulations to verify the analytical results and demonstrate that these Bessel radiation patterns exist for a wide range of junction parameters.
Cite
@article{arxiv.2105.13522,
title = {Josephson radiation patterns in underdamped topological Josephson junctions},
author = {Yuejian Zhang and Xiping Yang and Jia-Jin Feng and Zhi Wang and Tianxing Ma},
journal= {arXiv preprint arXiv:2105.13522},
year = {2022}
}
Comments
Accepted for publication as a Regular Article in Physical Review B