Phase Matching Free Sensing with Undetected Light Using a Nonlinear Thin-Film Metasurface
Optics
2025-12-02 v2
Abstract
In this article, we report classical sensing with undetected light using octave spanning stimulated four-wave mixing from a plasmonic metasurface. The bidirectional nonlinear scattering due to inherent reflections from such thin nonlinear materials modifies their operation within a nonlinear interferometer. The theoretical model for visibility accounting for such bidirectionality as well as pulsed illumination accurately predicts visibility in the system as a function of transmission in the near-infrared seed (idler) arm. Spectrally resolving the visible signal emission evaluates the total dispersion within the interferometer, highlighting the prospect of ultrafast sensing with undetected photons.
Keywords
Cite
@article{arxiv.2506.01175,
title = {Phase Matching Free Sensing with Undetected Light Using a Nonlinear Thin-Film Metasurface},
author = {Toby Severs Millard and Nathan Gemmell and Ross C. Schofield and Mohsen Rahmani and Alex S. Clark and Chris C. Phillips and Rupert F. Oulton},
journal= {arXiv preprint arXiv:2506.01175},
year = {2025}
}