The IceCube Neutrino Observatory has observed high-energy neutrinos produced in some of the most violent processes in the Universe. But despite of more than a decade of observations only a few neutrino sources have been identified. Identifying these sources presents an unprecedented opportunity to study neutrinos. My proposal aims to exploit the fact that neutrinos exhibit quantum mechanical properties over megaparsecs distances, to search for the origin of neutrino mass, which remains an unresolved mystery in physics. Resolving this mystery is expected to lead us to finding new particles and new forces. By utilizing cutting-edge data analysis and computational techniques, including the possibility of using quantum computers in the future, I will substantially increase the number of detected neutrino sources. My research sets the stage for the next 30 years of neutrino astrophysics and provides a new pathway to discover the origin of neutrino masses.