Postquench prethermalization in a disordered quantum fluid of light

Pierre-Élie Larré, Dominique Delande, and Nicolas Cherroret
Phys. Rev. A 97, 043805 – Published 5 April 2018

Abstract

We study the coherence of a disordered and interacting quantum light field after propagation along a nonlinear optical fiber. Disorder is generated by a cross-phase modulation with a randomized auxiliary classical light field, while interactions are induced by self-phase modulation. When penetrating the fiber from free space, the incoming quantum light undergoes a disorder and interaction quench. By calculating the coherence function of the transmitted quantum light, we show that the decoherence induced by the quench spreads in a light-cone fashion in the nonequilibrium many-body quantum system, leaving the latter prethermalize with peculiar features originating from disorder.

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  • Received 22 December 2017

DOI:https://doi.org/10.1103/PhysRevA.97.043805

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & OpticalNonlinear DynamicsInterdisciplinary Physics

Authors & Affiliations

Pierre-Élie Larré1,2,*, Dominique Delande2, and Nicolas Cherroret2

  • 1Laboratoire de Physique Théorique et Modélisation, Université de Cergy-Pontoise, CNRS, 2 Avenue Adolphe-Chauvin, 95302 Cergy-Pontoise CEDEX, France
  • 2Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France, 4 Place Jussieu, 75252 Paris CEDEX 05, France

  • *Corresponding author: pierre-elie.larre@u-cergy.fr, pierre-elie.larre@lkb.upmc.fr

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Issue

Vol. 97, Iss. 4 — April 2018

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