Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved Heralded Schemes to Generate Entangled States From Single
  Photons   We present a novel semi-analytical methodology to construct optimal linear
optical circuits for heralded production of 3-photon GHZ and 2-photon Bell
states. We provide a detailed description and analysis of the resulting optical
schemes, which deliver success probabilities of 1/54 and 2/27 for dual-rail
encoded 3-GHZ and Bell states generation, respectively. Our results improve the
known constructive bounds on the success probabilities for 3-GHZ states and are
of particular importance for a ballistic quantum computing model, for which
these states provide an essential resource.

21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con