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arXiv · 0812.4749

Resonant Cascaded Down-Conversion

Christian Weedbrook·Ben Perrett·Karen V. Kheruntsyan·Peter D. Drummond·Raphael C. Pooser·Olivier Pfister
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Abstract

We analyze an optical parametric oscillator (OPO) in which cascaded down-conversion occurs inside a cavity resonant for all modes but the initial pump. Due to the resonant cascade design, the OPO present two χ^2 level oscillation thresholds that are therefore remarkably lower than for a χ^3 OPO. This is promising for reaching the regime of an effective third-order nonlinearity well above both thresholds. Such a χ^2 cascaded device also has potential applications in frequency conversion to far infra-red regimes. But, most importantly, it can generate novel multi-partite quantum correlations in the output radiation, which represent a step beyond squeezed or entangled light. The output can be highly non-Gaussian, and therefore not describable by any semi-classical model.

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Christian Weedbrook, Ben Perrett, Karen V. Kheruntsyan, Peter D. Drummond, Raphael C. Pooser, Olivier Pfister. 2008-12-27. Resonant Cascaded Down-Conversion. https://arxiv.org/abs/0812.4749

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