[Résonance paramétrique dissipative dans un gaz de Bose 1D modulé]
We synthesize results of previous works to give a coherent and self-consistent account of parametric resonance in a modulated quasi-1D Bose gas in the presence of a dissipative mechanism. The resonant behaviour is shown to be largely in line with the predictions of a phenomenological model published in 2014, while the associated dissipation rate is consistent with that derived in 2022 from three-wave mixing processes between the produced quasiparticles and thermal fluctuations. Particular emphasis is put on the evolution of entanglement for opposite momenta quasiparticles which is a signature of their vacuum origin.
Nous synthétisons les résultats de travaux antérieurs pour produire une présentation cohérente et auto-contenue du processus de résonance paramétrique dans un gaz de Bose quasi-1D modulé, en présence de dissipation. Nous démontrons que le déroulement du processus est en très bon accord avec les prédictions d’un modèle phénoménologique publié en 2014. De plus, nous montrons que le taux de dissipation associé est consistant avec celui dérivé en 2022 à partir de l’étude de processus de mélange à trois ondes entre les quasi-particules produites par la modulation et les fluctuations thermiques du gaz. Une attention particulière est portée à l’évolution de l’intrication entre quasi-particules d’impulsion opposées qui est une signature de leur génération à partir du vide.
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Mots-clés : Résonance paramétrique, Intrication bipartite, Dissipation
Amaury Micheli 1 ; Scott Robertson 2
CC-BY 4.0
@article{CRPHYS_2024__25_S2_A15_0,
author = {Amaury Micheli and Scott Robertson},
title = {Dissipative parametric resonance in a modulated {1D} {Bose} gas},
journal = {Comptes Rendus. Physique},
publisher = {Acad\'emie des sciences, Paris},
year = {2024},
doi = {10.5802/crphys.250},
language = {en},
note = {Online first},
}
Amaury Micheli; Scott Robertson. Dissipative parametric resonance in a modulated 1D Bose gas. Comptes Rendus. Physique, Online first (2024), pp. 1-34. doi : 10.5802/crphys.250.
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