Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tutorial: synthetic frequency dimensions in dynamically modulated ring
  resonators   The concept of synthetic dimensions in photonics has attracted rapidly
growing interest in the past few years. Among a variety of photonic systems,
the ring resonator system under dynamic modulation has been investigated in
depth both in theory and experiment, and has proven to be a powerful way to
build synthetic frequency dimensions. In this tutorial, we start with a
pedagogical introduction to the theoretical approaches in describing the
dynamically modulated ring resonator system, and then review experimental
methods in building such a system. Moreover, we discuss important physical
phenomena in synthetic dimensions, including nontrivial topological physics.
Our tutorial provides a pathway towards studying the dynamically modulated ring
resonator system, understanding synthetic dimensions in photonics, and
discusses future prospects for both fundamental research and practical
applications using synthetic dimensions.

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The categories of this paper are: ao-sci
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: q-fin