Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Delay of light in an optical bottle resonator with nanoscale radius
  variation: dispersionless, broadband, and low-loss   It is shown theoretically that an optical bottle resonator with a nanoscale
radius variation can perform a multi-nanosecond long dispersionless delay of
light in a nanometer-order bandwidth with minimal losses. Experimentally, a 3
mm long resonator with a 2.8 nm deep semi-parabolic radius variation is
fabricated from a 19 micron radius silica fiber with a sub-angstrom precision.
In excellent agreement with theory, the resonator exhibits the
impedance-matched 2.58 ns (3 bytes) delay of 100 ps pulses with 0.44 dB/ns
intrinsic loss. This is a miniature slow light delay line with the record large
delay time, record small transmission loss, dispersion, and effective speed of
light.

4
The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
2
The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: stat