Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exploring classical correlations in noise to recover quantum information
  using local filtering   A general quantum channel consisting of a decohering and a filtering element
carries one qubit of an entangled photon pair. As we apply a local filter to
the other qubit, some mutual quantum information between the two qubits is
restored depending on the properties of the noise mixed into the signal. We
demonstrate a drastic difference between channels with bit-flip and phase-flip
noise and further suggest a scheme for maximal recovery of the quantum
information.

0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org