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Open Quantum Systems Decoherence Entanglement Theory Quantum Correlations Quantum Chemistry

Experimental quantification of the entanglement of noisy twin beams

arXiv

Authors: Vaclav Michalek, Jan Perina, Ondrej Haderka

Year

2020

Paper ID

22182

Status

Preprint

Abstract Read

~2 min

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Abstract

Gradual loss of the entanglement of a twin beam containing around 25 photon pairs with the increasing external noise is experimentally investigated. The entanglement is quantified by the non-classicality depths and the non-classicality counting parameters related to several non-classicality criteria. The reduction of intensity moments of the analyzed multi-mode twin beams to single-mode ones allows to determine the negativity as another quantifier of the entanglement. Both the raw photocount histograms and the reconstructed photon-number distributions are analyzed in parallel.

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Gradual loss of the entanglement of a twin beam containing around 25 photon pairs with the increasing external noise is experimentally investigated.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2007.08310 [2] arXiv https://arxiv.org/abs/2007.08310 [3] Publisher https://arxiv.org/abs/2007.08310

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