噪声对动态局域的影响  

The effect of noise on the dynamical localization

作　　者：王晓波[1] 姜哲[2] 董有尔[1] 肖连团[1] 

机构地区：[1]山西大学物理电子工程学院,太原030006 [2]北京应用物理与计算数学研究所,北京100088

出　　处：《物理学报》2007年第12期7207-7212,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60378004)资助的课题.~~

摘　　要：研究了噪声对动态局域的影响.发现当局域条件变得严格时,局域化的抗噪声能力并没有改变,这意味着在真实环境下,可以在较长的量子点链中取得满意的局域效果.因为长时间平均占据概率峰值的高度与局域化的抗噪声能力有密切的关系,所以可以得到一种在真实环境中改善局域效果的方法.The effect of noise to the dynamical localization is discussed, and it is found that although the localization although this condition becomes strict, the resistance of the system to noise is not changed, which means we can obtain satisfactory localization effect in a long quantum dot array in practice. The height of localization peak of long-term averaged occupation probability has close relation with the resistance of the system to noise, which provides a method to improve the localization effect in practice.

关 键 词：动态局域 噪声 平均占据 

分 类 号：O413.1[理学—理论物理]