Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of arbitrary two-photon entanglement state with the photonic
  Faraday rotation   We propose an efficient protocol for measuring the concurrence of arbitrary
two-photon pure entangled state with the help of the photonic Faraday rotation.
In the protocol, the concurrence of the photonic entangled state can be
conversed into the total success probability for picking up the odd-parity
photonic state. For completing the measurement task, we require some auxiliary
three-level atoms, which are trapped in the low-quality cavities. Our protocol
can be well realized under current experimental conditions. Moreover, under
practical imperfect atom state detection and photonic Faraday rotation
conditions, our protocol can also work well. Based on these features, our
protocol may be useful in current quantum information processing.

33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat