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29 March 2024
 
  » arxiv » 1302.3186

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Requirements for two-source entanglement concentration
Mihai Vidrighin ; Tim J. Bartley ; Gaia Donati ; Xian-Min Jin ; Marco Barbieri ; W. Steven Kolthammer ; Animesh Datta ; Ian A. Walmsley ;
Date 13 Feb 2013
AbstractEntanglement enhancement is a key task for quantum technologies. This operation performed on states produced by parametric down-conversion sources has been the object of several recent experimental investigations. In particular, conditional preparation by photon-subtraction has been shown to improve the entanglement of these states. Here we analyse the role played by non-Gaussian and Gaussian measurements in more general entanglement concentration operations performed on a pair of two-mode squeezed vacua. We find stringent requirements for achieving an improved entanglement enhancement by measuring jointly these two resource states.
Source arXiv, 1302.3186
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