Detection of sub-shot-noise spatial correlation in high-gain parametric down conversion.

@article{Jedrkiewicz2004DetectionOS,
  title={Detection of sub-shot-noise spatial correlation in high-gain parametric down conversion.},
  author={Ottavia Jedrkiewicz and Y Jiang and E. Brambilla and Alessandra Gatti and Morten Bache and L. A. Lugiato and Paolo di Trapani},
  journal={Physical review letters},
  year={2004},
  volume={93 24},
  pages={243601}
}
Using a 1 GW, 1 ps pump laser pulse in high-gain parametric down conversion allows us to detect sub-shot-noise spatial quantum correlation with up to 100 photoelectrons per mode by means of a high efficiency charge coupled device. The statistics is performed in single shot over independent spatial replica of the system. Evident quantum correlations were observed between symmetrical signal and idler spatial areas in the far field. In accordance with the predictions of numerical calculations, the… CONTINUE READING
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