Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Helical polariton lasing from topological valleys in an organic
  crystalline microcavity   Topological photonics provides an important platform for the development of
photonic devices with robust disorder-immune light transport and controllable
helicity. Mixing photons with excitons (or polaritons) gives rise to nontrivial
polaritonic bands with chiral modes, allowing the manipulation of helical
lasers in strongly coupled light-matter systems. In this work, we demonstrate
helical polariton lasing from topological valleys of an organic anisotropic
microcrystalline cavity based on tailored local nontrivial band geometry. This
polariton laser emits light of different helicity along different angular
directions. The significantly enhanced chiral characteristics are achieved by
the nonlinear relaxation process. Helical topological polariton lasers may
provide a perfect platform for the exploration of novel topological phenomena
that involve light-matter interaction and the development of polariton-based
spintronic devices.

21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th