Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Hermitian topological exciton-polariton corner modes   We theoretically study two-dimensional exciton-polariton lattices and predict
that non-Hermitian topological corner modes can be formed under non-resonant
pumping. As a generalization of the non-Hermitian skin effect, all eigenstates
are localized at the two corners in our model. This is also a higher
dimensional topology compared to other proposals in exciton-polariton systems
and we find that it allows propagating signals in the bulk of the system to
travel around defects, which is not possible in one-dimensional topological
lattices or two-dimensional lattices with Hermitian edge states. Furthermore,
as all polariton states are localized away from an excitation spot, the system
offers an opportunity for more accurate measurement of the polariton-polariton
interaction strength as the pump-induced exciton-reservoir is spatially
separated from all polariton states.

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The categories of this paper are: q-bio
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
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The categories of this paper are: cs
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: stat