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arXiv · 1604.01807

Realization of a twin beam source based on four-wave mixing in Cesium

G. Adenier·D. Calonico·S. Micalizio·N. Samantaray·I. P. Degiovanni·I. Ruo Berchera
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Abstract

Four-wave mixing (4WM) is a known source of intense non-classical twin beams. It can be generated when an intense laser beam (the pump) and a weak laser beam (the seed) overlap in a $\chi^{(3)}$ medium (here cesium vapor), with frequencies close to resonance with atomic transitions. The twin beams generated by 4WM have frequencies naturally close to atomic transitions, and can be intense (gain $\gg 1$) even in the CW pump regime, which is not the case for PDC $\chi^{(2)}$ phenomenon in non-linear crystals. So, 4WM is well suited for atom-light interaction and atom-based quantum protocols. Here we present the first realization of a source of 4-wave mixing exploiting $D_2$ line of Cesium atoms.

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G. Adenier, D. Calonico, S. Micalizio, N. Samantaray, I. P. Degiovanni, I. Ruo Berchera. 2016-04-06. Realization of a twin beam source based on four-wave mixing in Cesium. https://arxiv.org/abs/1604.01807

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