A recent experiment has demonstrated the quantum nature of spatial fluctuations in the high gain regime of parametric down-conversion. We show theoretically and numerically that, by exploiting the local character of these spatial correlations, it is possible to image weak amplitude objects with a sensitivity beyond the standard quantum limit.
Quantum spatial correlations in parametric down-conversion and detection of faint images
BRAMBILLA, ENRICO;Caspani L.;JEDRKIEWICZ, OTTAVIA;LUGIATO, LUIGI
2007-01-01
Abstract
A recent experiment has demonstrated the quantum nature of spatial fluctuations in the high gain regime of parametric down-conversion. We show theoretically and numerically that, by exploiting the local character of these spatial correlations, it is possible to image weak amplitude objects with a sensitivity beyond the standard quantum limit.
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