Heterodyne Receivers for Quantum Communication
Christian Schaeffer, Sebastian Kleis, Max Rückmann, Darko Zibar · Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) · 2019
Phase estimation of signals below noise is a main challenge in optical quantum communication receivers. System experiments with 1 GBaud over 26 km fiber were achieved. Laser phase noise is mitigated using Machine Learning methods.