Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Far field subwavelength imaging and focusing using a wire medium based
  resonant metalens   This is the second article in a series of two dealing with the concept of
"resonant metalens" we introduced recently [Phys. Rev. Lett. 104, 203901
(2010)]. It is a new type of lens capable of coding in time and radiating
efficiently in the far field region sub-diffraction information of an object. A
proof of concept of such a lens is performed in the microwave range, using a
medium made out of a square lattice of parallel conducting wires with finite
length. We investigate a sub-wavelength focusing scheme with time reversal and
demonstrate experimentally spots with focal widths of {\lambda}/25. Through a
cross-correlation based imaging procedure we show an image reconstruction with
a resolution of {\lambda}/80. Eventually we discuss the limitations of such a
lens which reside essentially in losses.

26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs