Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Weak-value technique for detecting weak magnetic field based on Faraday
  magneto-optic effect   We study the amplification of weak magnetic field with Weak-value technique
based on Faraday magneto-optic effect. By using a different scheme to perform
the Sagnac interferometer with the probe in momentum space, we have
demonstrated the new weak measure protocol to detect the small weak magnetic
field by amplifying the phase shift of Faraday magneto-optic effect. At the
given the maximum incident intensity of the initial spectrum, the detection
limit of the intensity of the spectrometer and the accuracy of detecting weak
magnetic field, we can theoretically give the appropriate pre-selection,
post-selection and others optical structure before experiment. Our numerical
results show our scheme with Weak-value technique is effective and feasible to
detect weak magnetic field with magnetic field intensity lower than $10^{-10}$
T.

2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
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The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an