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Entanglement swapping using continuous variables

R. E. S. Polkinghorne·T. C. Ralph
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Abstract

We investigate the efficacy with which entanglement can be teleported using a continuous measurement scheme. We show that by using the correct gain for the classical channel the degree of violation of locality that can be demonstrated (using a CH type inequality) is {\it not} a function of the level of entanglement squeezing used in the teleportation. This is possible because a gain condition can always be choosen such that passage through the teleporter is equivalent to pure attenuation of the input field.

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R. E. S. Polkinghorne, T. C. Ralph. 1999-06-18. Entanglement swapping using continuous variables. https://doi.org/10.1103/physrevlett.83.2095

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