Demonstration of a scheme for the generation of “event-ready” entangled photon pairs from a single-photon source

Date: 2008-12-30
Authors Qiang Zhang, Xiao-Hui Bao, Chao-Yang Lu, Xiao-Qi Zhou, Tao Yang, Terry Rudolph, and Jian-Wei Pan
Journal No. Phys. Rev. A 77, 062316 (2008)  
Abstract We present a feasible and efficient scheme, and its proof-of-principle demonstration, of creating “event-ready” polarization-entangled photon pairs using only simple linear optical elements and single photons. The quality of entangled photon pairs produced in our experiment is confirmed by a strict violation of Bell’s inequality. This scheme and the associated experimental techniques present a step toward linear optics quantum computation.