Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Negative refraction in time-varying, strongly-coupled plasmonic
  antenna-ENZ systems   Time-varying metasurfaces are emerging as a powerful instrument for the
dynamical control of the electromagnetic properties of a propagating wave. Here
we demonstrate an efficient time-varying metasurface based on plasmonic
nano-antennas strongly coupled to an epsilon-near-zero (ENZ) deeply
sub-wavelength film. The plasmonic resonance of the metal resonators strongly
interacts with the optical ENZ modes, providing a Rabi level spitting of ~30%.
Optical pumping at frequency {\omega} induces a nonlinear polarisation
oscillating at 2{\omega} responsible for an efficient generation of a phase
conjugate and a negative refracted beam with a conversion efficiency that is
more than four orders of magnitude greater compared to the bare ENZ film. The
introduction of a strongly coupled plasmonic system therefore provides a simple
and effective route towards the implementation of ENZ physics at the nanoscale

33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs