Negativity of the Wigner function as an indicator of nonclassicality

Details Negativity of the Wigner function as an indicator of nonclassicality Negativity of the Wigner function as an indicator of nonclassicality

2004-06-02

arxiv.org/abs/quant-ph/0406015v1

J. Opt. B: Quantum Semiclass. Opt. 6 (2004) 396-404

Physics

Quantum Physics

10 pages, 7 figures

Scientific paper

10.1088/1464-4266/6/10/003

A measure of nonclassicality of quantum states based on the volume of the
negative part of the Wigner function is proposed. We analyze this quantity for
Fock states, squeezed displaced Fock states and cat-like states defined as
coherent superposition of two Gaussian wave packets.

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