Brazilian Twin Photons 32nd anniversary
Abstract
We present a historical review of the development and impact of spontaneous parametric down-conversion (SPDC) in Brazil, marking over three decades since the first twin-photon experiments were performed in the country. This article traces the pioneering efforts that initiated the field, highlighting key experiments, institutions, and researchers who contributed to its growth. We discuss seminal works that established SPDC as a fundamental tool in the Brazilian Quantum Optics community, including studies on spatial correlations, entanglement, and decoherence. By presenting a curated sequence of experiments, we offer an overview of how Brazilian research in twin-photon systems has explored profound concepts through fundamental demonstrations, leading to significant international impact. This review also highlights the formation of a strong scientific community and its ongoing efforts to turn fundamental knowledge into quantum applications.
Keywords
Cite
@article{arxiv.2512.07670,
title = {Brazilian Twin Photons 32nd anniversary},
author = {Renné Medeiros de Araújo and Raphael César Souza Pimenta and Lucas Marques Fagundes and Gustavo Henrique dos Santos and Nara Rubiano da Silva and Stephen Patrick Walborn and Paulo Henrique Souto Ribeiro},
journal= {arXiv preprint arXiv:2512.07670},
year = {2025}
}
Comments
32 pages; 19 figures; to appear in the Special Issue "100 years of Quantum Mechanics" of the Brazilian Journal of Physics