Counter-directional polariton coupler
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We report on an on-chip routing device for propagating condensates of exciton-polaritons. This counter-directional 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 show the ultra fast time dynamics of the device via ps-resolved streak camera measurements. This scalable, all-directional coupler element is a central building block for compact non-linear on-chip photonic architectures.
Klaas , M , Beierlein , J , Rozas , E , Klembt , S , Suchomel , H , Harder , T H , Winkler , K , Emmerling , M , Flayac , H , Martin , M D , Viña , L , Höfling , S & Schneider , C 2019 , ' Counter-directional polariton coupler ' Applied Physics Letters , vol. 114 , 061102 . DOI: 10.1063/1.5067247
Applied Physics Letters
Copyright ©2019 The Author(s). Published by AIP Publishing. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1063/1.5067247
DescriptionThe Wurzburg group acknowledges the financial support by the state of Bavaria and the DFG within the project Schn1376-3.1. J.B. and S.K. acknowledge funding from DFG grant KL3124/2-1. The Madrid team acknowledges financial support by the Spanish MINECO Grants MAT2014-53119-C2-1-R and MAT2017-83722-R.
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