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Open Quantum Systems Decoherence
Entanglement Theory Quantum Correlations
Experimentally friendly bounds on non-Gaussian entanglement from second moments
arXiv
Authors: Gerardo Adesso
Year
2009
Paper ID
9211
Status
Preprint
Abstract Read
~2 min
Abstract Words
64
Citations
N/A
Abstract
We demonstrate that the entanglement in a class of two-mode non-Gaussian states obtained by subtracting photons from Gaussian twin beams can be bounded from above and from below by functionals of the second moments only. Knowledge of the covariance matrix thus suffices for an entanglement quantification with appreciable precision. The absolute error in the entanglement estimation scales with the non-Gaussianity of the considered states.
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- We demonstrate that the entanglement in a class of two-mode non-Gaussian states obtained by subtracting photons from Gaussian twin beams can be bounded from above and from...
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