Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge sensitivity enhancement via mechanical oscillation in suspended
  carbon nanotube devices   Single electron transistors (SETs) fabricated from single-walled carbon
nanotubes (SWNTs) can be operated as highly sensitive charge detectors reaching
sensitivity levels comparable to metallic radio frequency SETs (rf-SETs). Here
we demonstrate how the charge sensitivity of the device can be improved by
using the mechanical oscillations of a single-walled carbon nanotube quantum
dot. To optimize the charge sensitivity $\delta Q$, we drive the mechanical
resonator far into the nonlinear regime and bias it to an operating point where
the mechanical third order nonlinearity is cancelled out. This way we enhance
$\delta Q$, from 6 $\mu e/\sqrt{\textrm{Hz}}$ for the static case, to 0.97 $\mu
e/\sqrt{\textrm{Hz}}$, at a probe frequency of $\sim$ 1.3 kHz.

23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph