Photon correlations represent a central resource in many quantum optics experiments, with applications ranging from quantum information protocols to sensing. Engineering such correlations is often challenging, especially in multi-particle scenarios. In this work we describe an effective method for shaping spatial correlations between photons by patterning their distinguishability in a quantum interference setup. We show how to write and edit these bi-photon correlations between the two output channels of a beam-splitter, hiding this encoded information from conventional intensity measurements. Our scheme offers an easy extension to multiparticle scenarios and facilitates the transmission of high-dimensional quantum information, with potential applications to quantum communication and imaging protocols.
@article{arxiv.2509.04725,
title = {Tailoring spatial correlations with quantum interference},
author = {Carlo Schiano and Bereneice Sephton and Elnaz Darsheshdar and Lorenzo Marrucci and Corrado de Lisio and Vincenzo D'Ambrosio},
journal= {arXiv preprint arXiv:2509.04725},
year = {2025}
}