Efficient measurement of high-dimensional quantum correlations, especially spatial ones, is essential for quantum technologies, given their inherent high dimensionality and easy manipulation with basic optical elements. We propose and demonstrate an adaptively-gated hybrid intensified camera (HIC) that combines the information from a high spatial resolution sensor and a high temporal resolution detector, offering precise control over the number of photons detected within each frame. The HIC facilitates spatially resolved single-photon counting measurements. We study the measurement of momentum correlations of photon pairs generated in type-I spontaneous parametric down-conversion with the HIC and demonstrate the possibility of time-tagging the registered photons. With a spatial resolution of nearly 9 megapixels and nanosecond temporal resolution, this system allows for the realization of previously infeasible quantum optics experiments.
@article{arxiv.2305.16245,
title = {High-dimensional quantum correlation measurements with an adaptively gated hybrid single-photon camera},
author = {Sanjukta Kundu and Jerzy Szuniewicz and Grzegorz Firlik and Alexander Krupinski-Ptaszek and Radek Lapkiewicz},
journal= {arXiv preprint arXiv:2305.16245},
year = {2023}
}