Topological study of the North-Eastern Italian infrastructure for QKD and field measurements

The thesis project involves studying the existing optical fiber communication infrastructure in the North-Eastern Italian territory, used for telecommunications, in order to evaluate its physical characteristics and geographical coverage to implement quantum cryptography protocols. The thesis is divided into three parts: an introductory section covering the theoretical pillars of optics and quantum communications, a second part focusing on the analysis of the existing fiber optic network, and a third part presenting field measurement reports as a test for the previous analyses. The final section includes the presentation of results derived from implementing Quantum Key Distribution (QKD) devices on a specific optical fiber route within the region and its regular operations.