Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Steady state preparation of long-lived nuclear spin singlet pair at room
  temperature   The coherent high-fidelity generation of nuclear spins in long-lived singlet
states which may find application as quantum memory or sensor represents a
considerable experimental challenge. Here we propose a dissipative scheme that
achieves the preparation of pairs of nuclear spins in long-lived singlet states
by a protocol that combines the interaction between the nuclei and a
periodically reset electron spin of an NV center with local rf-control of the
nuclear spins. The final state of this protocol is independent of the initial
preparation of the nuclei, is robust to external field fluctuations and can be
operated at room temperature. We show that a high fidelity singlet pair of a
13C dimer in a nuclear bath in diamond can be generated under realistic
experimental conditions.

10
The categories of this paper are: q-bio
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph