Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Backflash light characterization to prevent QKD zero-error hacking   Single photon avalanche diodes (SPADs) are the most commercially diffused
solution for single-photon counting in quantum key distribution (QKD)
applications. However, the secondary photon emission, arising from the
avalanche of charge carriers during a photon detection, may be exploited by an
eavesdropper to gain information without forcing errors in the transmission
key. In this paper, we characterise such backflash light in gated InGaAs/InP
SPADs, and its spectral and temporal characterization for different detector
models and different operating parameters. We qualitatively bound the maximum
information leakage due to backflash light, and propose a solution.

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The categories of this paper are: bayes-an
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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: solv-int
0
The categories of this paper are: hep-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
3
The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc