Generation of entanglement in regular systems

被引：18
|
作者：
Znidaric, M [1 ]
Prosen, T [1 ]
机构：
[1] Univ Ljubljana, Fac Math & Phys, Dept Phys, Ljubljana, Slovenia
来源：
PHYSICAL REVIEW A | 2005年 / 71卷 / 03期
关键词：
D O I：
10.1103/PhysRevA.71.032103
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. The 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) x (strength of perturbation), independently of the Planck's constant.
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页数：4
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