A new nonclassicality measure for the quantum states of a bosonic field
Univ. Lille, CNRS, aUMR 8524 -Laboratoire Paul Painlevé, F-59000 Lille, France
2 Univ. Lille, CNRS, UMR 8523 -PhLAM -Physique des Lasers Atomes et Molécules, F-59000 Lille, France
3 B. I. Stepanov Institute of Physics, NASB, Nezavisimosti Ave. 68, Minsk 220072 Belarus
* e-mail: Stephan.De-Bievre@univ-lille.fr
Published online: 15 January 2019
We review a recently proposed measure of the nonclassicality of a bosonic field, based on the sensitivity of its quasi-probability distributions to ordering of the creation and annihilation operators. We illustrate the new measure by several concrete examples and show its advantages compared to other measures of nonclassicality such as the Wigner function negativity and the entanglement potential.
© The Authors, published by EDP Sciences, 2019
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