On detection of quasiclassical states
classification
🧮 math-ph
math.MPquant-ph
keywords
criterionstatestermscasesclassicalitycomputeddetectionexactly
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We give a criterion of classicality for mixed states in terms of expectation values of a quantum observable. Using group representation theory we identify all cases when the criterion can be computed exactly in terms of the spectrum of a single operator.
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