Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decoherence of a single-ion qubit immersed in a spin-polarized atomic
  bath   We report on the immersion of a spin-qubit encoded in a single trapped ion
into a spin-polarized neutral atom environment, which possesses both continuous
(motional) and discrete (spin) degrees of freedom. The environment offers the
possibility of a precise microscopic description, which allows us to understand
dynamics and decoherence from first principles. We observe the spin dynamics of
the qubit and measure the decoherence times (T1 and T2), which are determined
by the spin-exchange interaction as well as by an unexpectedly strong
spin-nonconserving coupling mechanism.

31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th