Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-Path Solid-State Interferometry Using Ultra-Subwavelength 2D
  Plasmonic Waves   We report an on-chip solid-state Mach-Zehnder interferometer operating on
two-dimensional (2D) plasmonic waves at microwave frequencies. Two plasmonic
paths are defined with GaAs/AlGaAs 2D electron gas 80 nm below a metallic gate.
The gated 2D plasmonic waves achieve a velocity of ~c/300 (c: free-space light
speed). Due to this ultra-subwavelength confinement, the resolution of the 2D
plasmonic interferometer is two orders of magnitude higher than that of its
electromagnetic counterpart at a given frequency. This GHz proof-of-concept at
cryogenic temperatures can be scaled to the THz IR range for room temperature
operation, while maintaining the benefits of the ultra-subwavelength
confinement.

11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th