Controlling X-ray emission with dispersion-engineered surface plasmon polaritons
Optics
2026-01-29 v1
Abstract
We propose controlling the angular and spectral distribution of hard x-ray emission by entangling x-ray photons with ultraviolet surface plasmon polaritons (SPPs) whose dispersion is engineered by a metal-dielectric multilayer on a nonlinear crystal. Spontaneous parametric down-conversion of an x-ray pump produces a hard x-ray signal photon correlated with an ultraviolet SPP mode near its resonance. Engineering the SPPs dispersion reshapes the phase-matching landscape and imprints tunable angular-spectral structure on the emitted x-ray photons. The scheme enables compact, designable control of x-ray emission and extends surface-plasmon-assisted nonlinear and quantum x-ray optics.
Keywords
Cite
@article{arxiv.2601.20337,
title = {Controlling X-ray emission with dispersion-engineered surface plasmon polaritons},
author = {H. Aknin and Y. Klein and S. Shwartz},
journal= {arXiv preprint arXiv:2601.20337},
year = {2026}
}
Comments
8 pages, 3 figures