Photon Number Resolving Detectors (PNRDs) are devices capable of measuring the number of photons present in an incident optical beam, enabling light sources to be measured and characterized at the quantum level. In this paper, we explore the performance and design considerations of a linearly multiplexed photon number-resolving single-photon detector array, integrated on a single mode waveguide. Our investigation focus on defining and analyzing the fidelity of such an array under various conditions and proposing practical designs for its implementation. Through theoretical analysis and numerical simulations, we show how propagation losses and dark counts may have a strong impact on the performance of the system and highlight the importance of mitigating these effects in practical implementations.
@article{arxiv.2408.12345,
title = {Linearly Multiplexed Photon Number Resolving Single-photon Detectors Array},
author = {Leonardo Limongi and Francesco Martini and Thu Ha Dao and Alessandro Gaggero and Hamza Hasnaoui and Igor Lopez-Gonzalez and Fabio Chiarello and Fabio de Matteis and Alberto Quaranta and Andrea Salamon and Francesco Mattioli and Martino Bernard and Mirko Lobino},
journal= {arXiv preprint arXiv:2408.12345},
year = {2024}
}