Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dissipation-sensitive multi-photon excitations of strongly interacting
  Rydberg atoms   We theoretically investigate the effect of dissipation on multi-photon
excitation of Rydberg atoms. The steady states and the dynamics are compared
via two types of four-level excitation schemes with different dissipative paths
of spontaneous emission. We find that in the case of strong Rydberg-Rydberg
interaction, the schemes will settle in several different non-equilibrium
steady states. The interesting aspect is that there exists the multi-stable
steady states, which reveals the competition between interaction-induced
nonlinearity and dissipation caused by spontaneous emission. A numerical
simulation on the Rydberg population dynamics in the bistable region exhibits
different features existing in the two schemes even with the same initial
conditions, which accounts for the influence of the dissipation on the
dynamics.

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The categories of this paper are: q-bio
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The categories of this paper are: econ
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
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The categories of this paper are: stat
32
The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom