Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Near-infrared single-photon spectroscopy of a whispering gallery mode
  resonator using energy-resolving transition edge sensors   We demonstrate a method to perform spectroscopy of near-infrared single
photons without the need of dispersive elements. This method is based on a
photon energy resolving transition edge sensor and is applied for the
characterization of widely wavelength tunable narrow-band single photons
emitted from a crystalline whispering gallery mode resonator. We measure the
emission wavelength of the generated signal and idler photons with an
uncertainty of up to 2 nm.

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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg