Self-localized solitonlike peak in uniform nonresonantly pumped exciton-polariton condensates
Phys. Rev. B 113, 075157 – Published 27 February, 2026
DOI: https://doi.org/10.1103/kw8l-mh6q
Abstract
Bright localized structures in incoherently pumped exciton-polariton condensates are generally challenging to realize under uniform pumping. We propose an experimentally accessible method to generate self-localized solitonlike peak using finite-sized uniform pumping. By using a homogeneous condensate generated through large-area pumping as the initial state, localized waves emerge from the boundaries and converge toward the center, forming a stable, high-intensity localized structure on the condensate background. This self-localization is enabled by the delicate balance between gain and loss inherent to exciton-polariton condensates, allowing for higher condensate densities even at relatively low pumping strengths due to boundary-induced effects. Our results extend the range of soliton solutions to regimes where homogeneous condensates are weakly stable or weakly unstable. Furthermore, the intensity, width, and stability of the solitonlike peak can be tuned through the strength and the shape of the pump beam, as well as other key system parameters, providing a practical pathway for controlled manipulation. Our findings hold for both one-dimensional and two-dimensional configurations, offering insights into nonlinear dynamics and interaction mechanisms in nonequilibrium systems.
