Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Equation of Motion for Estimation Fidelity of Monitored Oscillating
  Qubits   We study the convergence properties of state estimates of an oscillating
qubit being monitored by a sequence of \textit{discrete}, unsharp measurements.
Our method derives a differential equation determining the evolution of the
estimation fidelity from a single incremental step. When the oscillation
frequency $\Omega$ is precisely known, the estimation fidelity converges
exponentially fast to unity. For imprecise knowledge of $\Omega$ we derive the
asypmtotic estimation fidelity.

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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: cs
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph