GREENBERGER-HORNE-ZEILINGER PARADOXES WITH SYMMETRIC MULTIPORT BEAM SPLITTERS

@article{ukowski1999GREENBERGERHORNEZEILINGERPW,
  title={GREENBERGER-HORNE-ZEILINGER PARADOXES WITH SYMMETRIC MULTIPORT BEAM SPLITTERS},
  author={Marek Żukowski and Dagomir Kaszlikowski},
  journal={Physical Review A},
  year={1999},
  volume={59},
  pages={3200-3203}
}
In a gedankenexperiment N particles in a generalized GHZ-type beam entangled state (each particle can be in one of M beams) are fed into N symmetric 2M-port beam splitters (spatially separated). Correlation functions for such a process (using the Bell numbers value assignment approach) reveal a remarkable symmetry. For N=M+1 greater or equal to 4 a series of GHZ paradoxes are shown. 
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