Quantum cooperative helical metafilms for producing nonclassical light (C05)

Third Party Funds Group - Sub project


Start date : 01.01.2021

End date : 31.12.2024


Overall project details

Overall project

TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa

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Short description

We study quantum cooperative effects in the linear and nonlinear optical response of helical metafilms. In particular, by tuning the characteristics of the metafilms, we aim to obtain a high value of the second-order nonlinear susceptibility. This property will be used to efficiently generate entangled photon pairs through spontaneous parametric down-conversion. Further, we will spatially modulate the properties of the metafilms, to vary and control the entanglement of the photon pairs, in particular in orbital angular momentum.

Scientific Abstract

We study the quantum cooperative effects in the linear and nonlinear optical response of helical metafilms. By engineering the metafilms, we aim to achieve high values of the second-order nonlinear susceptibility. This susceptibility will be used to generate pairs of entangled photons through spontaneous parametric down-conversion. By spatially modulating the metafilm properties, we will tailor the entanglement of photon pairs, including orbital angular momentum (OAM) entanglement.

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