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Article Dans Une Revue Physical Review Letters Année : 2021

Measurement of the Static Structure Factor in a Paraxial Fluid of Light Using Bragg-like Spectroscopy

Clara Piekarski
Wei Liu
Jeff Steinhauer
  • Fonction : Auteur
Alberto Bramati

Résumé

We implement Bragg-like spectroscopy in a paraxial fluid of light by imprinting analogues of short Bragg pulses on the photon fluid using wavefront shaping with a spatial light modulator. We report a measurement of the static structure factor, SðkÞ, and we find a quantitative agreement with the prediction of the Feynman relation revealing indirectly the presence of pair-correlated particles in the fluid. Finally, we improve the resolution over previous methods and obtain the dispersion relation including a linear phononic regime for weakly interacting photons and low sound velocity.
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Dates et versions

hal-03644006 , version 1 (17-04-2022)

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Clara Piekarski, Wei Liu, Jeff Steinhauer, Elisabeth Giacobino, Alberto Bramati, et al.. Measurement of the Static Structure Factor in a Paraxial Fluid of Light Using Bragg-like Spectroscopy. Physical Review Letters, 2021, 127 (2), pp.023401. ⟨10.1103/physrevlett.127.023401⟩. ⟨hal-03644006⟩
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