Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kerr reversal in Josephson meta-material and traveling wave parametric
  amplification   Josephson meta-materials have recently emerged as very promising platform for
superconducting quantum science and technologies. Their distinguishing
potential resides in ability to engineer them at sub-wavelength scales, which
allows complete control over wave dispersion and nonlinear interaction. In this
article we report a versatile Josephson transmission line with strong third
order nonlinearity which can be tuned from positive to negative values, and
suppressed second order non linearity. As an initial implementation of this
multipurpose meta-material, we operate it to demonstrate reversed Kerr
phase-matching mechanism in traveling wave parametric amplification. Compared
to previous state of the art phase matching approaches, this reversed Kerr
phase matching avoids the presence of gaps in transmission, can reduce gain
ripples, and allows in situ tunability of the amplification band over an
unprecedented wide range. Besides such notable advancements in the
amplification performance with direct applications to superconducting quantum
computing and generation of broadband squeezing, the in-situ tunability with
sign reversal of the nonlinearity in traveling wave structures, with no
counterpart in optics to the best of our knowledge, opens exciting experimental
possibilities in the general framework of microwave quantum optics,
single-photon detection and quantum limited amplification.

37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph