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

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Cuevas, J (Author) Other; Rodrigues, AS (Author) FCUP; Carretero Gonzalez, R (Author) Other; Kevrekidis, PG (Author) Other; Frantzeskakis, DJ (Author) Other

Journal

Title: Physical Review B - Condensed Matter and Materials Physics

Vol. 83

ISSN: 1098-0121

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 10 Citations

ISI Web of Science

Scopus - 12 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

CORDIS: Physical sciences > Physics > Condensed matter properties > Electronic, magnetic and superconductive propertie

Other information

Authenticus ID: P-002-QCK

DOI: 10.1103/physrevb.83.245140

Abstract (EN): 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 two initially separated condensates, both of which are capable of nucleating dark multisoliton dynamical states.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10