Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal scheme for indirect quantum control   We consider a bipartite quantum object, composed of a quantum system and a
quantum actuator which is periodically reset. We show that the reduced dynamics
of the system approaches unitarity as the reset frequency of the actuator is
increased. This phenomenon arises because quantum systems interacting for a
short time can impact each other faster than they can become significantly
entangled. In the high reset-frequency limit, the effective Hamiltonian
describing the system's unitary evolution depends on the state to which the
actuator is reset. This makes it possible to indirectly implement a continuous
family of effective Hamiltonians on one part of a bipartite quantum object,
thereby reducing the problem of indirect control (via a quantum actuator) to
the well-studied one of direct quantum control.

30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin