Part 4/13:
Following that monumental achievement, further advancements have occurred. By December 2024, researchers at Northwestern University successfully teleported quantum information over a 30 km fiber optic cable already carrying classical internet traffic. This significant experiment not only demonstrated the feasibility of quantum signals coexisting with existing communication infrastructures but also established a path to merge quantum and classical technologies. By utilizing advanced filtering techniques and less congested wavelengths, they ensured that quantum data could navigate through traditional data without distortion.