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Phys Rev Lett. 2010 Jun 25;104(25):253603. Epub 2010 Jun 25.

Differential ghost imaging.

Author information

1
CNR-INFM-CNISM, Dipartimento di Fisica e Matematica, Università dell'Insubria, Via Valleggio 11, 22100 Como, Italy. fabio.ferri@uninsubria.it

Erratum in

  • Phys Rev Lett. 2010 Nov 19;105(21):219902.

Abstract

We present a new technique, differential ghost imaging (DGI), which dramatically enhances the signal-to-noise ratio (SNR) of imaging methods based on spatially correlated beams. DGI can measure the transmission function of an object in absolute units, with a SNR that can be orders of magnitude higher than the one achievable with the conventional ghost imaging (GI) analysis. This feature allows for the first time, to our knowledge, the imaging of weakly absorbing objects, which represents a breakthrough for GI applications. Theoretical analysis and experimental and numerical data assessing the performances of the technique are presented.

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