Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological Hybrid Silicon Microlasers   Topological photonics provides a robust framework for strategically
controlling light confinement and propagation dynamics. By exploiting the
marriage between this notion and symmetry-constrained mode competition in an
active setting, we experimentally demonstrate, for the first time, a hybrid
silicon microlaser structure supporting a topologically protected zero-mode
lasing. This mode is distributed over an integrated array of optical
microrings, each supporting multiple modes that compete for gain. However, the
mode competition is diminished in favor of a pre-defined topological state,
which reflects the charge conjugation symmetry induced by the gain profile.
Robust single-mode operation in the desired state prevails even with
intentionally introduced perturbations. The demonstrated microlaser is
hybrid-implemented on a silicon-on-insulator substrate, thereby readily
suitable for integrated silicon photonics with potential applications in
optical communication and computing.

9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th