4.6 Article

Nonclassicality criteria in terms of moments

Journal

PHYSICAL REVIEW A
Volume 71, Issue 1, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.71.011802

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Criteria for the, nonclassicality of a quantum state of the harmonic oscillator are formulated in terms of normally ordered moments of quadratures. Inequalities are obtained that are equivalent to the failure of the Glauber-Sudarshan P function to be a probability density. A possibility to measure the required moments is proposed.

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