Wigner function non-classicality as indicator of quantum chaos
A. Kowalewska-Kud{\l}aszyk, J.K. Kalaga, and W. Leo\'nski
TL;DR
This paper introduces a Wigner function-based parameter to detect quantum chaos, using the non-classicality entropy in a damped nonlinear oscillator system subjected to external pulses.
Contribution
It proposes a novel chaos indicator derived from Wigner function non-classicality, applicable to quantum systems with damping and external excitations.
Findings
The parameter effectively signals quantum chaos in the studied system.
Non-classicality entropy correlates with chaotic dynamics.
Method demonstrates potential for analyzing quantum chaos in dissipative systems.
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 "non-classicallity" proposed in \cite{KZ04}. We perform our considerations for the system of damped nonlinear (Kerr-like) oscillator excited by a series of ultra-short external pulses.
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