Position-momentum entanglement is a versatile high-dimensional resource in quantum optics. From fundamental tests of reality, to application in quantum technologies, spatial entanglement has had an increasing growth in recent years. In this review, we explore these advances, starting from the generation of spatial entanglement, followed by the different types of measurements for quantifying the entanglement, and finishing with different quantum-based applications. We conclude the review with a discussion and future perspectives on the field.
@article{arxiv.2505.22265,
title = {Advances in Position-Momentum Entanglement: A Versatile Tool for Quantum Technologies},
author = {Satyajeet Patil and Sebastian Töpfer and Rajshree Swarnkar and Sergio Tovar-Perez and Jonas Moos and Jorge Fuenzalida and Markus Gräfe},
journal= {arXiv preprint arXiv:2505.22265},
year = {2025}
}