Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical parametric oscillation in silicon carbide nanophotonics   Silicon carbide (SiC) is rapidly emerging as a leading platform for the
implementation of nonlinear and quantum photonics. Here, we find that
commercial SiC, which hosts a variety of spin qubits, possesses low optical
absorption that can enable SiC integrated photonics with quality factors
exceeding $10^7$. We fabricate microring resonators with quality factors as
high as 1.1 million, and observe low-threshold (8.5 $\pm$ 0.5 mW) optical
parametric oscillation as well as optical microcombs spanning 200 nm. Our
demonstration is an essential milestone in the development of photonic devices
that harness the unique optical properties of SiC, paving the way toward the
monolithic integration of nonlinear photonics with spin-based quantum
technologies.

6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn