Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhancement of Josephson phase diffusion by microwaves   We report an experimental and theoretical study of the phase diffusion in
small Josephson junctions under microwave irradiation. A peculiar enhancement
of the phase diffusion by microwaves is observed. The enhancement manifests
itself by a pronounced current peak in the current-voltage characteristics. The
voltage position $V_{\rm top}$ of the peak increases with the power $P$ of
microwave radiation as $V_{\rm top}\propto\sqrt P$, while its current amplitude
weakly decreases with $P$. As the microwave frequency increases, the peak
feature evolves into Shapiro steps with finite slope. Our theoretical analysis
taking into account the enhancement of incoherent superconducting current by
multi-photon absorption is in good agreement with experimental data.

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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom