Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of decoherence on resonant Cooper-pair tunneling in a
  voltage-biased single-Cooper-pair transistor   We analyze how decoherence appears in the I-V characteristics of a
voltage-biased single-Cooper-pair transistor. Especially the effect on resonant
single or several Cooper-pair tunneling is studied. We consider both a
symmetric and an asymmetric transistor. As a decoherence source we use a small
resistive impedance (Re[Z(w)]<<R_Q=h/4e^2) in series with the transistor, which
provides both thermal and quantum fluctuations of the voltage. Additional
decoherence sources are quasiparticle tunneling across the Josephson junctions
and quantum f-noise caused by spurious charge fluctuators nearby the island.
The analysis is based on a real-time diagrammatic technique which includes
Zeno-like effects in the charge transport, where the tunneling is slowed down
due to strong decoherence. As compared to the Pauli-master-equation treatment
of the problem, the present results are more consistent with experiments where
many of the predicted sharp resonant structures are missing or weakened due to
decoherence.

10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph