Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polarization preserving ultra fast optical shutter for quantum
  information processing   We present the realization of a ultra fast shutter for optical fields, which
allows to preserve a generic polarization state, based on a self-stabilized
interferometer. It exhibits high (or low) transmittivity when turned on (or
inactive), while the fidelity of the polarization state is high. The shutter is
realized through two beam displacing prisms and a longitudinal Pockels cell.
This can represent a useful tool for controlling light-atom interfaces in
quantum information processing.

26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex