Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-particle Mie-resonant all-dielectric nanolasers   All-dielectric subwavelength structures utilizing Mie resonances provide a
novel paradigm in nanophotonics for controlling and manipulating light. So far,
only spontaneous emission enhancement was demonstrated with single dielectric
nanoantennas, whereas stimulated emission was achieved only in large lattices
supporting collective modes. Here, we demonstrate the first single-particle
all-dielectric monolithic nanolaser driven by Mie resonances in visible and
near-IR frequency range. We employ halide perovskite CsPbBr$_3$ as both gain
and resonator material that provides high optical gain (up to $\sim 10^4$
cm$^{-1}$) and allows simple chemical synthesis of nanocubes with nearly
epitaxial quality. Our smallest non-plasmonic Mie-resonant single-mode
nanolaser with the size of 420 nm operates at room temperatures and wavelength
535 nm with linewidth $\sim 3.5$ meV. These novel lasing nanoantennas can pave
the way to multifunctional photonic designs for active control of light at the
nanoscale.

14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess