Frequency entanglement swapping
Sofiane Merkouche, Valérian Thiel, Alex O. C. Davis, Brian J. Smith · Conference on Lasers and Electro-Optics · 2018
Entanglement swapping of spectrally-entangled photons is experimentally demonstrated. Idler photons from independent entangled pairs are jointly detected after a beamsplitter and frequency filters, projecting the signal photons onto a frequency-bin singlet state.