In-situ creation and control of Josephson junctions with a laser beam
Superconductivity
2019-05-30 v1
Abstract
We propose the use of a laser beam tightly focused on a superconducting strip to create a Josephson junction by photothermal effect. The critical current of this junction can be easily controlled by the laser intensity. We show that a periodic modulation of the intensity substantially changes the dynamic properties of the junction and results in the appearance of Shapiro steps without microwave radiation. The experimental realization of optically driven Josephson junctions may open a way for the ultra-fast creation and switching of complex patterns of superconducting devices with tunable geometry and current-phase relations.
Keywords
Cite
@article{arxiv.1905.12270,
title = {In-situ creation and control of Josephson junctions with a laser beam},
author = {W. Magrini and S. Mironov and A. Rochet and P. Tamarat and Alexandre I. Buzdin and B. Lounis},
journal= {arXiv preprint arXiv:1905.12270},
year = {2019}
}