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Pré-Publication, Document De Travail Année : 2023

Angular-dependent Andreev reflection on a polaritonic superfluid

Résumé

We study analytically an analog of the Andreev reflection at a normal-superfluid interface. The polariton gapped superfluid region is achieved by quasi-resonant optical pumping. The interacting polaritons are described with the driven-dissipative Gross-Pitaevskii equation. We find analytical formulas for the angles and amplitudes of the reflected and transmitted particles. There are limit angles and energies, above which Andreev reflection/transmission cannot be observed anymore and where the Andreev wave becomes a surface mode, exponentially localized on the interface. These properties are confirmed by solving numerically the Gross-Pitaevskii equation in simulations reproducing realistic experimental conditions.

Dates et versions

hal-03919993 , version 1 (03-01-2023)

Identifiants

Citer

I. Septembre, D.D. Solnyshkov, G. Malpuech. Angular-dependent Andreev reflection on a polaritonic superfluid. 2023. ⟨hal-03919993⟩
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