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Chin. Phys. B, 2013, Vol. 22(1): 010304    DOI: 10.1088/1674-1056/22/1/010304
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Exciton transfer dynamics in a trimer system

Tan Qing-Shou (谭庆收)a, Xu Lan (许兰)b, Kuang Le-Man (匡乐满)a
a Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China;
b Department of Mathematics and Science, Hunan First Normal University, Changsha 410205, China
Abstract  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.
Keywords:  exciton transfer      quantum phase transition      trimer system  
Received:  29 May 2012      Revised:  30 June 2012      Accepted manuscript online: 
PACS:  03.65.Yz (Decoherence; open systems; quantum statistical methods)  
  05.60.Gg (Quantum transport)  
  71.35.-y (Excitons and related phenomena)  
Fund: Project supported by the National Natural Science Foundation (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), and the Hunan Provincial National Science Foundation, China (Grant No. 11JJ7001).
Corresponding Authors:  Kuang Le-Man     E-mail:  lmkuang@hunnu.edu.cn

Cite this article: 

Tan Qing-Shou (谭庆收), Xu Lan (许兰), Kuang Le-Man (匡乐满) Exciton transfer dynamics in a trimer system 2013 Chin. Phys. B 22 010304

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