Polariton condensation in S- and P-flatbands in a two-dimensional Lieb lattice
Polariton condensation in S- and P-flatbands in a two-dimensional Lieb lattice
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DOI：
10.1063/1.4995385
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发表时间：
2017-12-04
影响因子：
4
通讯作者：
Hoefling, S.
中科院分区：
文献类型：
--
作者：
Klembt, S.;Harder, T. H.;Hoefling, S.
我们研究了二维Lieb微柱晶格中激子-极化子的凝聚。我们发现在非共振激光激励下，极化子选择性凝聚成由S和微柱的P-x，P-y轨道模形成的平带。通过对S平带和P平带的相关布洛赫模的计算，精确地再现了这些凝聚体的真实空间模花样。我们的工作强调了激子-极化子晶格在模拟高级势景线的哈密顿量方面的潜力。此外，所获得的结果提供了对大多数已知紧束缚极限内的平带物理的更深层次的洞察。由AIP出版公司出版。
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,P-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 in emulating Hamiltonians of advanced potential landscapes. Furthermore, the obtained results provide a deeper insight into the physics of flatbands known mostly within the tight-binding limit. Published by AIP Publishing.