Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Divergent beams of nonlocally entangled electrons emitted from hybrid
  normal-superconducting structures   We propose the use of normal and Andreev resonances in normal-superconducting
structures to generate divergent beams of nonlocally entangled electrons.
Resonant levels are tuned to selectively transmit electrons with specific
values of the perpendicular energy, thus fixing the magnitude of the exit
angle. When the normal metal is a ballistic two-dimensional electron gas, the
proposed scheme guarantees arbitrarily large spatial separation of the
entangled electron beams emitted from a finite interface. We perform a
quantitative study of the linear and nonlinear transport properties of some
suitable structures, taking into account the large mismatch in effective masses
and Fermi wavelengths. Numerical estimates confirm the feasibility of the
proposed beam separation method.

16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas