Ferron-Polaritons in Superconductor/Ferroelectric/Superconductor Heterostructures
Superconductivity
2026-02-06 v1 Mesoscale and Nanoscale Physics
Abstract
We predict the formation of ferron-polariton - a hybrid light-matter quasiparticle arising from the coupling between collective ferroelectric excitations (ferrons) and Swihart photons in a superconductor/ferroelectric/superconductor heterostructure. The coupling provides direct evidence for ferrons and reaches the ultrastrong-coupling regime, with a spectral gap in the terahertz range, orders of magnitude larger than those in magnetic analogues, reflecting the superior strength of electric dipole interactions. Our work establishes superconductor-ferroelectric heterostructures as a novel platform for exploring extreme light-matter coupling and for developing high-speed, ferroelectric-based quantum technologies at terahertz frequencies.
Keywords
Cite
@article{arxiv.2602.05473,
title = {Ferron-Polaritons in Superconductor/Ferroelectric/Superconductor Heterostructures},
author = {M. Nursagatov and Xiyin Ye and G. A. Bobkov and Tao Yu and I. V. Bobkova},
journal= {arXiv preprint arXiv:2602.05473},
year = {2026}
}