Bounding the speed of `spooky action at a distance'

@inproceedings{Yin2013BoundingTS,
  title={Bounding the speed of `spooky action at a distance'},
  author={J. Yin and Y. Cao and Hai-Lin Yong and J. Ren and Hao Liang and Shengkai Liao and F. Zhou and C. Liu and Yu-ping Wu and Ge-Sheng Pan and Q. Zhang and Cheng-Zhi Peng and J. Pan},
  year={2013}
}
In the well-known EPR paper, Einstein et al. called the nonlocal correlation in quantum entanglement as ‘spooky action at a distance’. If the spooky action does exist, what is its speed? All previous experiments along this direction have locality and freedom-of-choice loopholes. Here, we strictly closed the loopholes by observing a 12-hour continuous violation of Bell inequality and concluded that the lower bound speed of ‘spooky action’ was four orders of magnitude of the speed of light if the… Expand
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