Phys. Rev. Lett. 96, 110501 (2006) [4 pages]

Experimental Synchronization of Independent Entangled Photon Sources

Abstract

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Tao Yang¹, Qiang Zhang¹, Teng-Yun Chen¹, Shan Lu¹, Juan Yin¹, Jian-Wei Pan^1,*, Zhi-Yi Wei^2,†, Jing-Rong Tian², and Jie Zhang²
¹Department of Modern Physics and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
²Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

Received 10 March 2005; published 20 March 2006

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.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.96.110501

DOI:

10.1103/PhysRevLett.96.110501

PACS:

03.67.Mn, 03.65.Ud, 42.62.Eh, 42.65.Lm

^*Electronic address: pan@ustc.edu.cn

^†Electronic address: zywei@aphy.iphy.ac.cn

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Phys. Rev. Lett. 96, 110501 (2006) [4 pages]

Experimental Synchronization of Independent Entangled Photon Sources