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The teleportation of the signal beam of a parametric amplifier is considered, and its entanglement with the idler beam before and after the teleportation process is computed. A criterion based on homodyne measurements is proposed to discount purely classical effects, and it is suggested that the preservation of the Einstein-Podolsky-Rosen correlations during teleportation may be verified experimentally.
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Sze M. Tan (1999) studied this question.
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