Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal Control of Decoupled Quantum Systems   It is shown that if one can perform a restricted set of fast manipulations on
a quantum system, one can implement a large class of dynamical evolutions by
effectively removing or introducing selected Hamiltonians. The procedure can be
used to achieve universal noise-tolerant control based on purely unitary
open-loop transformations of the dynamics. As a result, it is in principle
possible to perform noise-protected universal quantum computation using no
extra space resources.

15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat