English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study, theoretically and numerically, the onset and development ofmodulational instability in an incoherently pumped spatially homogeneouspolariton condensate. Within the framework of mean-field theory, we identifyregimes of modulational instability in two cases: 1) Strong feedback betweenthe condensate and reservoir, which may occur in scalar condensates, and 2)Parametric scattering in the presence of polarization splitting in spinorcondensates. In both cases we investigate the instability induced textures inspace and time including non-equilibrium dynamics of phase dislocations andvortices. In particular we discuss the mechanism of vortex destabilization andformation of spiraling waves. We also identify the presence of topologicaldefects, which take the form of half-vortex pairs in the spinor case, giving an"eyelet" structure in intensity and dipole type structure in the spinpolarization. In the modulationally stable parameter domains, we observeformation of the phase defects in the process of condensate formation from aninitially spatially incoherent low-density state. In analogy to theKibble-Zurek type scaling for nonequilibrium phase transitions, we find thatthe defect density scales with the pumping rate.

Instability-induced formation and non-equilibrium dynamics of phase defects in polariton condensates