Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Producing GHZ state of nitrogen-vacancy centers in cavity QED   We propose a scheme to generate GHZ state of nitrogen-vacancy centers coupled
to a whispering-gallery mode cavity. The implemented evolution is independent
on the cavity field state with the assistant of a strong classical field, and
thus not sensitive to the thermal state of the cavity. Meanwhile, it is fast
compare to the convectional dispersive interaction induced operation in a
cavity-assisted system. The scheme is readily scalable to multiqubit scenario.

22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph