We propose a nonlinear imaging scheme with undetected photons that overcomes the diffraction limit by transferring near-field information at one wavelength to far-field information of a correlated photon with a different wavelength generated through spontaneous photon-pair generation. At the same time, this scheme allows for retrieval of high-contrast images with zero background, making it a highly sensitive scheme for imaging of small objects at challenging spectral ranges with subdiffraction resolutions.
@article{arxiv.2203.11050,
title = {Subdiffraction Quantum Imaging with Undetected Photons},
author = {Elkin A. Santos and Thomas Pertsch and Frank Setzpfandt and Sina Saravi},
journal= {arXiv preprint arXiv:2203.11050},
year = {2022}
}