Joint entropy and decoherence without dissipation in a driven harmonic oscillator

被引：2
作者：
Fotue, A. J. [1 ]
Wirngo, A. V. [2 ]
Tsiaze, R. M. Keumo [2 ,3 ]
Hounkonnou, M. N. [2 ]
机构：
[1] Univ Dschang, Fac Sci, Dept Phys, Mesoscop & Multilayer Struct Lab, POB 479, Dschang, Cameroon
[2] Univ Abomey Calavi, ICMPA, UNESCO Chair, 072 POB 50, Cotonou, Benin
[3] Univ Yaounde I, Fac Sci, Lab Mech Mat & Struct, POB 812, Yaounde, Cameroon
来源：
EUROPEAN PHYSICAL JOURNAL PLUS | 2016年 / 131卷 / 09期
关键词：
QUANTUM; MECHANICS;
D O I：
10.1140/epjp/i2016-16326-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The joint entropy of a non-dissipative driven harmonic oscillator for both the single and the double Gaussian states is determined. It is shown that, a non-random driving force does not influence the evolution of the system's joint entropy. For a random driving force however, the joint entropy increases almost monotonically with time, while exhibiting oscillatory behavior. The increase is a further proof of the decoherence mechanism in the system, for which we determine the duration and other characteristics.
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页数：12
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