Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum superpositions of clockwise and counterclockwise supercurrent
  states in the dynamics of a rf-SQUID exposed to a quantized electromagnetic
  field   The dynamical behavior of a superconducting quantum interference device (a
rf-SQUID) irradiated by a single mode quantized electromagnetic field is
theoretically investigated. Treating the SQUID as a flux qubit, we analyze the
dynamics of the combined system within the low lying energy Hilbert subspace
both in the asymmetric and in the symmetric SQUID potential configurations. We
show that the temporal evolution of the system is dominated by an oscillatory
behavior characterized by more than one, generally speaking, incommensurable
Rabi frequencies whose expressions are explicitly given. We find that the
external parameters may fixed in such a way to realize a control on the
dynamical replay of the total system which, for instance, may be forced to
exhibit a periodic evolution accompanied by the occurrence of an oscillatory
disappearance of entanglement between the two subsystems. We demonstrate the
possibility of generating quantum maximally entangled superpositions of the two
macroscopically distinguishable states describing clockwise and
counterclockwise supercurrents in the loop. The experimental feasibility of our
proposal is briefly discussed.

26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin