Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical determination and magnetic manipulation of single
  nitrogen-vacancy color center in diamond nanocrystal   The controlled and coherent manipulation of individual quantum systems is a
fundamental key for the development of quantum information processing. The
nitrogen-vacancy (NV) color center in diamond is a promising system since its
photoluminescence is perfectly stable at room temperature and its electron spin
can be optically read-out at the individual level. We review here the
experiments currently realized in our laboratory, concerning the use of single
NV color center as single photon source and the coherent magnetic manipulation
of the electron spin associated to a single NV color center. Furthermore, we
demonstrate a nanoscopy experiment based on saturation absorption effect, which
allows to optically pin-point single NV color center at a sub-? resolution.
This opens a possibility to independently address two or multiple
magnetically-coupled single NV color centers, which is a necessary step toward
the realization of a diamond-based quantum computer.

10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas