Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Realizing probabilistic identification and cloning of quantum states via
  universal quantum logic gates   Probabilistic quantum cloning and identifying machines can be constructed via
unitary-reduction processes [Duan and Guo, Phys. Rev. Lett. 80, 4999 (1998)].
Given the cloning (identifying) probabilities, we derive an explicit
representation of the unitary evolution and corresponding Hamiltonian to
realize probabilistic cloning (identification). The logic networks are obtained
by decomposing the unitary representation into universal quantum logic
operations. The robustness of the networks is also discussed. Our method is
suitable for a $k$-partite system, such as quantum computer, and may be
generalized to general state-dependent cloning and identification.

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The categories of this paper are: ao-sci
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an