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Generation of entanglement in regular systems

Marko Znidaric·Tomaz Prosen
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Abstract

We study dynamical generation of entanglement in bipartite quantum systems, characterized by purity (or linear entropy), and caused by the coupling between the two subsystems. Explicit semiclassical theory of purity decay is derived for integrable classical dynamics of the uncoupled system, and for localized (general Gaussian wave-packet) initial states. Purity decays as an algebraic function of time times strength of perturbation, independently of the Planck's constant.

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Marko Znidaric, Tomaz Prosen. 2004-10-01. Generation of entanglement in regular systems. https://doi.org/10.1103/physreva.71.032103

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