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Nonlinear excitations, stability inversions, and dissipative dynamics in quasi-one-dimensional polariton condensates

Opened Access Nonlinear excitations, stability inversions, and dissipative dynamics in quasi-one-dimensional polariton condensates

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Autor: Cuevas-Maraver, Jesús
Rodrigues, Augusto S.
Carretero-González, Ricardo
Kevrekidis, Panayotis G.
Frantzeskakis, Dimitri J.
Departamento: Universidad de Sevilla. Departamento de Física Aplicada I
Fecha: 2011
Publicado en: Physical Review B (v. 83, n. 24, p. 245140:1-10)
Tipo de documento: Artículo
Resumen: We study the existence, stability, and dynamics of the ground state and nonlinear excitations, in the form of dark solitons, for a quasi-one-dimensional polariton condensate in the presence of nonresonant pumping and nonlinear damping. We find a series of remarkable features that can be directly contrasted to the case of the typically energy-conserving ultracold alkali-atom Bose-Einstein condensates. For some sizable parameter ranges, the nodeless (“ground”) state becomes unstable toward the formation of stable nonlinear single- or multi-dark-soliton excitations. It is also observed that for suitable parametric choices, the instability of single dark solitons can nucleate multi-dark-soliton states. Also, for other parametric regions, stable asymmetric sawtooth-like solutions exist. These are shown to emerge through a symmetry-breaking bifurcation from bubble-like solutions that we also explore. We also consider the dragging of a defect through the condensate and the interference of tw...
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Tamaño: 1.041Mb
Formato: PDF

URI: http://hdl.handle.net/11441/22737

DOI: 10.1103/PhysRevB.83.245140

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