title: Experimental synchronization of independent entangled photon sources.
abstract: We report the generation of independent entangled photon pairs from two synchronized but mutually incoherent laser sources. The quality of synchronization is confirmed by observing a violation of Bell's inequality with 3.2 standard deviations in an entanglement swapping experiment. The techniques developed in our experiment are not only important for realistic linear optical quantum-information processing, but also enable new tests of local realism.
authors.affiliation: Department of Modern Physics and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Yang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.forename: Teng-Yun
authors.initials: TY
authors.lastname: Chen
authors.forename: Shan
authors.initials: S
authors.lastname: Lu
authors.forename: Juan
authors.initials: J
authors.lastname: Yin
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Pan
authors.forename: Zhi-Yi
authors.initials: ZY
authors.lastname: Wei
authors.forename: Jing-Rong
authors.initials: JR
authors.lastname: Tian
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang