Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum efficiency of binary-outcome detectors of solid-state qubits   We discuss definitions of the quantum efficiency for binary-outcome qubit
detectors with imperfect fidelity, focusing on the subclass of quantum
non-demolition detectors. Quantum efficiency is analyzed for several models of
detectors, including indirect projective measurement, linear detector in
binary-outcome regime, detector of the superconducting phase qubit, and
detector based on tunneling into continuum.

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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
26
The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
2
The categories of this paper are: math