Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Operational quasiprobabilities for continuous variables   We generalize the operational quasiprobability involving sequential
measurements proposed by Ryu {\em et al.} [Phys. Rev. A {\bf 88}, 052123] to a
continuous-variable system. The quasiprobabilities in quantum optics are
incommensurate, i.e., they represent a given physical observation in different
mathematical forms from their classical counterparts, making it difficult to
operationally interpret their negative values. Our operational quasiprobability
is {\em commensurate}, enabling one to compare quantum and classical statistics
on the same footing. We show that the operational quasiprobability can be
negative against the hypothesis of macrorealism for various states of light.
Quadrature variables of light are our examples of continuous variables. We also
compare our approach to the Glauber-Sudarshan $\mathcal{P}$ function. In
addition, we suggest an experimental scheme to sequentially measure the
quadrature variables of light.

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The categories of this paper are: ao-sci
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The categories of this paper are: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: cs
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The categories of this paper are: supr-con
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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: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an