We demonstrate the ultranarrow temporal correlation (6 fs full width half maximum) of twin beams generated by parametric down-conversion by using its reverse process, i.e., sum-frequency generation. The result relies on an achromatic imaging of a huge bandwidth of twin beams and on a careful control of their spatial degrees of freedom. The detrimental effects of spatial filtering and imperfect imaging are shown, along with the theoretical model used to describe the results.

Detection of the Ultranarrow Temporal Correlation of Twin Beamsvia Sum-Frequency Generation

BRAMBILLA, ENRICO;DI TRAPANI, PAOLO;
2012

Abstract

We demonstrate the ultranarrow temporal correlation (6 fs full width half maximum) of twin beams generated by parametric down-conversion by using its reverse process, i.e., sum-frequency generation. The result relies on an achromatic imaging of a huge bandwidth of twin beams and on a careful control of their spatial degrees of freedom. The detrimental effects of spatial filtering and imperfect imaging are shown, along with the theoretical model used to describe the results.
PHYSICAL REVIEW LETTERS
Nonlinear Optics; Twin beams correlation
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/1776929
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