Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interaction of light and semiconductor can generate quantum states
  required for solid state quantum computing: Entangled, steered and other
  nonclassical states   Proposals for solid state quantum computing are extremely promising as they
can be used to built room temperature quantum computers. If such a quantum
computer is ever built it would require in-built sources of nonclassical states
required for various quantum information processing tasks. Possibilities of
generation of such nonclassical states are investigated here for a physical
system composed of a monochromatic light coupled to a two-band semiconductor
with direct band gap. The model Hamiltonian includes both photon-exciton and
exciton-exciton interactions. Time evolution of the relevant bosonic operators
are obtained analytically by using a perturbative technique that provides
operator solution for the coupled Heisenberg's equations of motion
corresponding to the system Hamiltonian. The bosonic operators are subsequently
used to study the possibilities of observing single and two mode squeezing and
antibunching after interaction in the relevant modes of light and
semiconductor. Further, entanglement between the exciton and photon modes is
reported. Finally, the nonclassical effects have been studied numerically for
the open quantum system scenario. In this situation, the nonlocal correlations
between two modes are shown to violate EPR steering inequality. The observed
nonclassical features, induced due to exciton-exciton pair interaction, can be
controlled by the phase of input field and the correlations between two modes
are shown to enhance due to nonclassicality in the input field.

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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
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The categories of this paper are: hep-th