Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Indistinguishable photons from separated silicon-vacancy centers in
  diamond   We demonstrate that silicon-vacancy (SiV) centers in diamond can be used to
efficiently generate coherent optical photons with excellent spectral
properties. We show that these features are due to the inversion symmetry
associated with SiV centers, and demonstrate generation of indistinguishable
single photons from separate emitters in a Hong-Ou-Mandel (HOM) interference
experiment.Prospects for realizing efficient quantum network nodes using SiV
centers are discussed.

31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga