Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge detection in gate-defined bilayer graphene quantum dots   We report on charge detection in electrostatically-defined quantum dot
devices in bilayer graphene using an integrated charge detector. The device is
fabricated without any etching and features a graphite back gate, leading to
high quality quantum dots. The charge detector is based on a second quantum dot
separated from the first dot by depletion underneath a 150 nm wide gate. We
show that Coulomb resonances in the sensing dot are sensitive to individual
charging events on the nearby quantum dot. The potential change due to single
electron charging causes a step-like change (up to 77 %) in the current through
the charge detector. Furthermore, the charging states of a quantum dot with
tunable tunneling barriers and of coupled quantum dots can be detected.

34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn