Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Biphoton phase-space correlations from Gouy-phase measurements using
  double slits   Quantum correlations encoded in photonic Laguerre-Gaussian modes were shown
to be related to the Gouy phase shifts (D. Kawase et al., Phys. Rev. Lett. 101,
050501 (2008)) allowing for a non-destructive manipulation of photonic quantum
states. In this work we exploit the relation between phase space correlations
of biphotons produced by spontaneously parametric down conversion (SPDC) as
encoded in the logarithmic negativity (LN) and the Gouy phase as they are
diffracted through an asymmetrical double slit setup. Using an analytical
approach based on a double-gaussian approximation for type-I SPDC biphotons, we
show that measurements of Gouy phase differences provide information on their
phase space entanglement variation, governed by the physical parameters of the
experiment and expressed by the LN via covariance matrix elements.

26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph