Experimental synchronization of independent entangled photon sources.
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.
Yang
Tao
T
Department of Modern Physics and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.
Zhang
Qiang
Q
Chen
Teng-Yun
TY
Lu
Shan
S
Yin
Juan
J
Pan
Jian-Wei
JW
Wei
Zhi-Yi
ZY
Tian
Jing-Rong
JR
Zhang
Jie
J