Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ground-state cooling the vibrations of suspended carbon-nanotubes with
  constant electron current   We investigate the efficiency of cooling the vibrations of a nano-mechanical
resonator, constituted by a partially suspended Carbon-nanotube and operating
as double-quantum dot. The motion is brought to lower temperatures by tailoring
the energy exchange via electromechanical coupling with single electrons,
constantly flowing through the nanotube when a constant potential difference is
applied at its extremes in the Coulomb-blockade regime. Ground-state cooling is
possible at sufficiently high quality factors, provided that the dephasing rate
of electron transport within the double dot does not exceed the resonator
frequency. For large values of the dephasing rates cooling can still be
achieved by appropriately setting the tunable parameters.

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The categories of this paper are: physics
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph