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Propagative Oscillations in Codirectional Polariton Waveguide Couplers

Beierlein J, Rozas E, Egorov OA, Klaas M, Yulin A, Suchomel H, Harder TH, Emmerling M, Martin MD, Shelykh IA, Schneider C, Peschel U, Vina L, Hoefling S, Klembt S (2021)

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Publication Type: Journal article

Publication year: 2021

Journal

Book Volume: 126

Article Number: 075302

Journal Issue: 7

DOI: 10.1103/PhysRevLett.126.075302

Abstract

We report on novel exciton-polariton routing devices created to study and purposely guide light-matter particles in their condensate phase. In a codirectional coupling device, two waveguides are connected by a partially etched section that facilitates tunable coupling of the adjacent channels. This evanescent coupling of the two macroscopic wave functions in each waveguide reveals itself in real space oscillations of the condensate. This Josephson-like oscillation has only been observed in coupled polariton traps so far. Here, we report on a similar coupling behavior in a controllable, propagative waveguide-based design. By controlling the gap width, channel length, or propagation energy, the exit port of the polariton flow can be chosen. This codirectional polariton device is a passive and scalable coupler element that can serve in compact, next generation logic architectures.

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How to cite

APA:

Beierlein, J., Rozas, E., Egorov, O.A., Klaas, M., Yulin, A., Suchomel, H.,... Klembt, S. (2021). Propagative Oscillations in Codirectional Polariton Waveguide Couplers. Physical Review Letters, 126(7). https://doi.org/10.1103/PhysRevLett.126.075302

MLA:

Beierlein, Johannes, et al. "Propagative Oscillations in Codirectional Polariton Waveguide Couplers." Physical Review Letters 126.7 (2021).

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