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arXiv · 1712.02166

Polariton condensation in $S$- and $P$-flatbands in a two-dimensional Lieb lattice

Sebastian Klembt·Tristan H. Harder·Oleg A. Egorov·Karol Winkler·Holger Suchomel·Johannes Beierlein·Monika Emmerling·Christian Schneider·Sven Höfling
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Abstract

We study the condensation of exciton-polaritons in a two-dimensional Lieb lattice of micropillars. We show selective polariton condensation into the flatbands formed by S and P$_{x;y}$ orbital modes of the micropillars under non-resonant laser excitation. The real space mode patterns of these condensates are accurately reproduced by the calculation of related Bloch modes of S- and P-flatbands. Our work emphasizes the potential of exciton-polariton lattices to emulate Hamiltonians of advanced potential landscapes. Furthermore, the obtained results provide a deeper inside into the physics of flatbands known mostly within the tight-binding limit.

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Sebastian Klembt, Tristan H. Harder, Oleg A. Egorov, Karol Winkler, Holger Suchomel, Johannes Beierlein, Monika Emmerling, Christian Schneider, Sven Höfling. 2017-12-06. Polariton condensation in $S$- and $P$-flatbands in a two-dimensional Lieb lattice. https://doi.org/10.1063/1.4995385

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