Phase-controlled heralding of photon-number entangled states
Young-Sik Ra, Hyang‐Tag Lim, Joo-Eon Oh, Yoon-Ho Kim · 2014
We report the generation of a photon-number entangled state in which detection of ancillary photons heralds the generation of the entangled state as well as its phase. Our scheme can operate with separable input states.