We present a device that exploits spatial and spectral correlations in parametric downconversion at once. By using a ghost imaging arrangement, we have been able to reconstruct remotely the frequency profile of a composite system. The presence of distinct spectral regions is corroborated by a model-independent statistical analysis that constitutes an intriguing possibility also in the low count regime.
@article{arxiv.2308.02318,
title = {A Quantum Ghost Imaging Spectrometer},
author = {Andrea Chiuri and Federico Angelini and Simone Santoro and Marco Barbieri and Ilaria Gianani},
journal= {arXiv preprint arXiv:2308.02318},
year = {2023}
}