Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Subradiant Dimer Excitations of Emitter Chains Coupled to a 1D Waveguide   This Letter shows that chains of optical or microwave emitters coupled to a
1D waveguide support subradiant states with close pairs of excited emitters,
which have longer lifetimes than even the most subradiant states with only a
single excitation. Exact, analytical expressions for non-radiative excitation
dimer states are obtained in the limit of infinite chains. To understand the
mechanism underlying these states, we present a formal equivalence between
subradiant dimers and single localized excitations around a chain defect
(unoccupied site). Our analytical mapping permits extension to emitter chains
coupled to the 3D free space vacuum field.

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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th