Coexistence of Entangled and Classical Light Over 45 km of Installed Fiber
Jordan M. Thomas, Gregory S. Kanter, Kim Fook Lee, Prem Kumar · Frontiers in Optics + Laser Science 2021 · 2021
We show coexistence of quantum entangled and classical light over 45.6 km of installed optical fiber. Wavelength engineering/filtering allows milliwatts copropagating power with quantum light from a photon-pair source with broad entangled spectrum.