title: Wigner-function nonclassicality as indicator of quantum chaos.
abstract: We propose a Wigner-function-based parameter that can be used as an indicator of quantum chaos. This parameter is defined as "entropy" from the time dependence of "nonclassicality" proposed by A. Kenfack and K. Zyczkowski [J. Opt. B 6, 394 (2004)]. We perform our considerations for the system of damped nonlinear (Kerr-like) oscillator excited by a series of ultrashort external pulses.
authors.affiliation: Nonlinear Optics Division, Institute of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland. annakow@amu.edu.pl
authors.forename: A
authors.initials: A
authors.lastname: Kowalewska-Kudłaszyk
authors.forename: J K
authors.initials: JK
authors.lastname: Kalaga
authors.forename: W
authors.initials: W
authors.lastname: Leoński