Development of a 1310 nm Quantum Key Distribution system

Quantum Key Distribution (QKD) represents an innovative technique of generating an encryption key shared between two interlocutors which allows overcoming the problems of classical cryptography. The purpose of the thesis is to build and test a QKD system operating at a wavelength of 1310 nm, which allows a better coexistence of the quantum signal with a classic communication signal at 1550 nm on the same optical fiber. Another objective of the thesis is to demonstrate the operating principle of an advanced version that works for both discrete and continuous variable QKD.