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29 March 2024
 
  » arxiv » quant-ph/9910030

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Criteria for Continuous-Variable Quantum Teleportation
Samuel L. Braunstein ; Christopher A. Fuchs ; H. J. Kimble ;
Date 7 Oct 1999
Subject quant-ph
AbstractWe derive an experimentally testable criterion for the teleportation of quantum states of continuous variables. This criterion is especially relevant to the recent experiment of Furusawa et al. [Science 282, 706-709 (1998)] where an input-output fidelity of $0.58 pm 0.02$ was achieved for optical coherent states. Our derivation demonstrates that fidelities greater than 1/2 could not have been achieved through the use of a classical channel alone; quantum entanglement was a crucial ingredient in the experiment.
Source arXiv, quant-ph/9910030
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