Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-visibility nonclassical interference between pure heralded single
  photons and weak coherent photons   We present an experiment of nonclassical interference between a pure heralded
single-photon state and a weak coherent state. Our experiment is the first to
demonstrate that spectrally pure single photons can have high interference
visibility, 89.4 \pm 0.5%, with weak coherent photons. Our scheme lays the
groundwork for future experiments requiring quantum interference between
photons in nonclassical states and those in coherent states.

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The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom