Measurement induced entanglement for excitation stored in remote atomic ensembles
Hugues de Riedmatten, C. W. Chou, D. Felinto, Sergey V. Polyakov, S. J. van Enk, Harry J. Kimble · 2006
We report the observation of heralded entanglement between remote atomic ensembles. The detection of an emitted photon projects the ensembles into an entangled state with one joint excitation stored in the whole system.