Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Manipulation of a single charge in a double quantum dot   We manipulate a single electron in a fully tunable double quantum dot using
microwave excitation. Under resonant conditions, microwaves drive transitions
between the (1,0) and (0,1) charge states of the double dot. Local quantum
point contact charge detectors enable a direct measurement of the
photon-induced change in occupancy of the charge states. From charge sensing
measurements, we find T1~16 ns and a lower bound estimate for T2* of 400 ps for
the charge two-level system.

31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin