Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fast generation of entangled photon pairs from a single quantum dot
  embedded in a photonic crystal cavity   We present a scheme for the fast generation of entangled photons from a
single quantum dot coupled to a planar photonic crystal that support two
orthogonally polarized cavity modes. We discuss ``within generation'' and
``across generation'' of entangled photons when both biexciton to exciton, and
exciton to ground state transitions, are coupled through cavity modes. In the
across generation, the photon entanglement is restored through a time delay
between the photons. The two photon concurrence, which is a measure of
entanglement, is greater than 0.7 and 0.8 using experimentally achievable
parameters in across generation and within generation, respectively. We also
show that the entanglement can be distilled in both cases using a simple
spectral filter.

33
The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
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The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol