Exciton transfer dynamics in a trimer system  

作　　者：谭庆收 许兰 匡乐满 

机构地区：[1]Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University [2]Department of Mathematics and Science, Hunan First Normal University

出　　处：《Chinese Physics B》2013年第1期84-87,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 11075050);the National Basic Research Program of China (Grant No. 2013CB921804);the Program for Changjiang Scholars and Innovative Research Team in University, China (Grant No. IRT0964);the Hunan Provincial National Science Foundation, China (Grant No. 11JJ7001)

摘　　要：We study exciton transfer dynamics in a trimer system by investigating excitation transfer probability （ETP）. We calculate ETP in the zero-temperature limit and theoretically predict the environment-assisted quantum critical effect, in which ETP exhibits a sudden change at the critical point of quantum phase transition for the trimer. In particular, we find that the steady-state ETP can be observed in the presence of the environment interaction.We study exciton transfer dynamics in a trimer system by investigating excitation transfer probability （ETP）. We calculate ETP in the zero-temperature limit and theoretically predict the environment-assisted quantum critical effect, in which ETP exhibits a sudden change at the critical point of quantum phase transition for the trimer. In particular, we find that the steady-state ETP can be observed in the presence of the environment interaction.

关 键 词：exciton transfer quantum phase transition trimer system 

分 类 号：O413[理学—理论物理]