Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct optical interfacing of CVD diamond for deported NV-based sensing
  experiments   Nitrogen-vacancy (NV) defect in diamond is a very promising tool for numerous
sensing applications like magnetometry or thermometry. In this paper, we
demonstrate a compact and convenient device for magnetic field imaging where a
commercial single mode photonic crystal fibre is directly coupled to a
commercial CVD ppm diamond. We managed to excite and detect efficiently the
luminescence from an ensemble of NV centres and also to perform Electron Spin
Resonance (ESR) experiments where the NV hyperfine structure is perfectly
resolved under continuous excitation and measurement.

20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph