We report on an on-chip routing device for propagating condensates of exciton-polaritons. This counterdirectional coupler implements signal control by a photonic microdisk potential, which couples two lithographically defined waveguides and reverses the condensate's propagation direction. By varying the structural sizes, we utilize the conjunction of the different dimensionalities to additionally evidence the functionality of a polaritonic resonant tunnel diode. Furthermore, we investigate the ultra fast dynamics of the device via ps-resolved streak camera measurements, which is distinctive for the polariton platform. This scalable, all-directional coupler element is a central building block for compact non-linear on-chip photonic architectures.
@article{arxiv.1902.03933,
title = {Counter-directional polariton coupler},
author = {M. Klaas and J. Beierlein and E. Rozas and S. Klembt and H. Suchomel and T. H. Harder and K. Winkler and M. Emmerling and H. Flayac and M. D. Martín and L. Viña and S. Höfling and C. Schneider},
journal= {arXiv preprint arXiv:1902.03933},
year = {2019}
}
Comments
This article has been accepted by Applied Physics Letters