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Opt Lett ; 43(16): 4045-4048, 2018 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-30106948

RESUMO

The simplicity of a question, such as wondering whether or not correlations characterize a certain system, collides with the experimental difficulty of accessing such information. Here we present a low-demanding experimental approach that refers to the use of a metrology scheme to obtain a conservative estimate of the strength of frequency correlations. Our test bed is the widespread case of a photon pair produced per downconversion. The theoretical architecture used to put the correlation degree on a quantitative ground is also described.

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