High-sensitivity imaging with multi-mode twin beams

@inproceedings{Brambilla2008HighsensitivityIW,
  title={High-sensitivity imaging with multi-mode twin beams},
  author={E. Brambilla and L. Caspani and Ottavia Jedrkiewicz and L. A. Lugiato and Alessandra Gatti},
  year={2008}
}
Twin entangled beams produced by single-pass parametric down-conversion PDC offer the opportunity to detect weak amount of absorption with an improved sensitivity with respect to standard techniques which make use of classical light sources. We propose a differential measurement scheme which exploits the spatial quantum correlation of type-II PDC to image a weak amplitude object with a sensitivity beyond the standard quantum limit imposed by shot noise. By applying a quantitative numerical… CONTINUE READING
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