Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Qubit-assisted thermometry of a quantum harmonic oscillator   We use the theory of quantum estimation in two different qubit-boson coupling
models to demonstrate that the temperature of a quantum harmonic oscillator can
be estimated with high precision by quantum-limited measurements on the qubit.
The two models that we address embody situations of current physical interest
due to their connection with ongoing experimental efforts on the control of
mesoscopic dynamics. We show that population measurements performed over the
qubit probe are near optimal for a broad range of temperatures of the harmonic
oscillator

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The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics