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Nonclassicality criteria in terms of moments

E. Shchukin, Th. Richter, and W. Vogel
Phys. Rev. A 71, 011802(R) – Published 26 January 2005

Abstract

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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  • Received 12 May 2004

DOI:https://doi.org/10.1103/PhysRevA.71.011802

©2005 American Physical Society

Authors & Affiliations

E. Shchukin, Th. Richter, and W. Vogel

  • Arbeitsgruppe Quantenoptik, Fachbereich Physik, Universität Rostock, D-18051 Rostock, Germany

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Issue

Vol. 71, Iss. 1 — January 2005

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