Impact of the Energetic Landscape on Polariton Condensates' Propagation along a Coupler

Polariton condensates' propagation is strongly dependent on the particular energy landscape the particles are moving upon, in which the geometry of the pathway laid for their movement plays a crucial role. Bends in the circuit's trajectories affect the condensates' speed and oblique g...

Full description

Saved in:
Bibliographic Details
Published in:Advanced optical materials 2020-09, Vol.8 (18), p.n/a
Main Authors: Rozas, Elena, Beierlein, Johannes, Yulin, Alexey, Klaas, Martin, Suchomel, Holger, Egorov, Oleg, Shelykh, Ivan Andreevich, Peschel, Ulf, Schneider, Christian, Klembt, Sebastian, Höfling, Sven, Martín, María Dolores, Viña, Luis
Format: Article
Language:English
Subjects:
Bends
Circuits
Condensates
Couplers
Eigenvalues
Excitons
Materials science
microcavities
optical spectroscopy
Optics
Polaritons
Propagation
Wave propagation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polariton condensates' propagation is strongly dependent on the particular energy landscape the particles are moving upon, in which the geometry of the pathway laid for their movement plays a crucial role. Bends in the circuit's trajectories affect the condensates' speed and oblique geometries introduce an additional discretization of the polaritons' momenta due to the mixing of short and long axis wavevectors on the propagating eigenvalues. In this work, the nature of the propagation of condensates along the arms of a polariton coupler is studied by a combination of time‐resolved micro‐tomography measurements and a theoretical model based on a mean field approximation where condensed polaritons are described by an equation for the slow varying amplitude of the polariton field coupled to an equation for the density of incoherent excitons. The propagation of polariton condensates along a non‐straight circuit is reported. The polariton dispersion relations at different positions along a doubly bent waveguide are measured in both the linear and nonlinear regimes and compared with mean‐field‐based numerical simulations. A slowdown of the polariton speed is found when the particles cross the bend.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.202000650