Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Control of optical spin Hall shift in phase-discontinuity metasurface by
  weak value measurement post-selection   Optical spin Hall (OSH) shift has been observed by weak measurement
amplification in a refraction beam passing through air-glass interface, the
refractive index gradient $\vec{\nabla} n$ being normal to the interface.
Phase-discontinuity metasurface (PMS) possesses $\vec{\nabla} n$ tangential to
the metasurface, and depending on the incidence angle either positive or
negative refraction takes place satisfying the generalized Snell's law. Rapid
phase-change over subwavelength distance at PMS leads to a large $\vec{\nabla}
n$, enabling a direct observation of OSH shift. Here, we identify that the
relative OSH shift between optical beams with spins $\pm 1$ depends on
incidence and refraction angles at PMS, and construct a measurement of OSH
effect with a variable phase retardance in the post-selection to demonstrate a
control of transverse shift. and demonstrate a control of OSH shift by
constructing a weak value measurement with a variable phase retardance in the
post-selection. Capability of OSH shift control permits a tunable precision
metrology applicable to nanoscale photonics such as angular momentum transfer
and sensing.

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The categories of this paper are: econ
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int