Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From Practice to Theory: The "Bright Illumination" Attack on Quantum Key
  Distribution Systems   The "Bright Illumination" attack [Lydersen et al., Nat. Photon. 4, 686-689
(2010)] is a practical attack, fully implementable against quantum key
distribution systems. In contrast to almost all developments in quantum
information processing (for example, Shor's factorization algorithm, quantum
teleportation, Bennett-Brassard (BB84) quantum key distribution, the
"Photon-Number Splitting" attack, and many other examples), for which theory
has been proposed decades before a proper implementation, the "Bright
Illumination" attack preceded any sign or hint of a theoretical prediction.
Here we explain how the "Reversed-Space" methodology of attacks, complementary
to the notion of "quantum side-channel attacks" (which is analogous to a
similar term in "classical" - namely, non-quantum - computer security), has
missed the opportunity of predicting the "Bright Illumination" attack.

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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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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: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-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: math-ph
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The categories of this paper are: funct-an