Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunneling Effects on Fine-Structure Splitting in Quantum Dot Molecules   We theoretically study the effects of bias-controlled interdot tunneling in
vertically coupled quantum dots on the emission properties of spin excitons in
various bias-controlled tunneling regimes. As a main result, for strongly
coupled dots we predict substantial reduction of optical fine structure
splitting without any drop in the optical oscillator strength. This special
reduction diminishes the distinguibility of polarized decay paths in cascade
emission processes suggesting the use of stacked quantum dot molecules as
entangled photon-pair sources.

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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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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: econ
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin