Nonclassicality filters and quasiprobabilities

T. Kiesel and W. Vogel
Phys. Rev. A 82, 032107 – Published 13 September 2010

Abstract

Necessary and sufficient conditions for the nonclassicality of bosonic quantum states are formulated by introducing nonclassicality filters and nonclassicality quasiprobability distributions. Regular quasiprobabilities are constructed from characteristic functions which can be directly sampled by balanced homodyne detection. Their negativities uncover the nonclassical effects of general quantum states. The method is illustrated by visualizing the nonclassical nature of a squeezed state.

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  • Received 1 April 2010

DOI:https://doi.org/10.1103/PhysRevA.82.032107

©2010 American Physical Society

Authors & Affiliations

T. Kiesel and W. Vogel

  • Arbeitsgruppe Quantenoptik, Institut für Physik, Universität Rostock, D-18051 Rostock, Germany

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Issue

Vol. 82, Iss. 3 — September 2010

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