Experimental demonstration of tripartite entanglement and controlled dense coding for continuous variables.

  title={Experimental demonstration of tripartite entanglement and controlled dense coding for continuous variables.},
  author={Jietai Jing and Jing Zhang and Ying Yan and Fagang Zhao and Changde Xie and Kunchi Peng},
  journal={Physical review letters},
  volume={90 16},
  • J. Jing, Jing Zhang, K. Peng
  • Published 18 October 2002
  • Physics
  • Physical review letters
A tripartite entangled state of bright optical field is experimentally produced using an Einstein-Podolsky-Rosen entangled state for continuous variables and linear optics. The controlled dense coding among a sender, a receiver, and a controller is demonstrated by exploiting the tripartite entanglement. The obtained three-mode "position" correlation and relative "momentum" correlation between the sender and the receiver, and thus the improvements of the measured signal to noise ratios of… 

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