Continuously active interferometer stabilization and control for time-bin entanglement distribution
P. Toliver, James M. Dailey, Anjali Agarwal, Nicholas A. Peters · Optics Express · 2015
We describe a new method enabling continuous stabilization and fine-level phase control of time-bin entanglement interferometers. Using this technique we demonstrate entangled photon transmission through 50 km of standard single-mode fiber. This technique reuses the entangled-pair generation pump which is co-propagated with the transmitted entangled photons. The co-propagating pump adds minimal noise to the entangled photons which are characterized by measuring a two-photon interference fringe.