Path entangled photons from parametric down-conversion
H. S. Eisenberg, Juan F. Hodelin, G. Khoury, Dirk Bouwmeester · 2005
Using stimulated parametric down-conversion, we propose a method for generating multiphoton path entanglement. By a special coincidence detection at one down-converted arm, the photons of the second arm non-locally bunch into the desired state. Experimental demonstration for the case of two photons is presented, as well as how to extend the scheme to any number of photons.